# Best API Development Tools for Small Business - Page 2

*By [Adam Crivello](https://research.g2.com/insights/author/adam-crivello)*

The best API development software in 2026 is Postman, rated 4.6 out of 5 on G2 based on 1,700+ verified reviews. For teams prioritizing unified design and testing in a single platform, Apidog leads with the highest user rating at 4.8 stars, though with a smaller review base.

1. Postman — 4.6/5 (1,700+ reviews): Collaborative API testing with collection-based workflows
2. MuleSoft Anypoint Platform — 4.5/5 (700+ reviews): API-led connectivity with reusable enterprise integration
3. Apidog — 4.8/5 (200+ reviews): Unified API design, testing, and documentation
4. Workato — 4.7/5 (700+ reviews): Multi-app API orchestration with low-code recipes
5. IBM API Connect — 4.3/5 (100+ reviews): End-to-end API lifecycle with DataPower-secured gateway

*Updated June 2026. Based on 2026 G2 verified review data across 1,450 products.*


Products classified in the overall API Development category are similar in many regards and help companies of all sizes solve their business problems. However, small business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Small Business API Development to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Small Business API Development category.

In addition to qualifying for inclusion in the API Development Tools category, to qualify for inclusion in the Small Business API Development Tools category, a product must have at least 10 reviews left by a reviewer from a small business.





## Top API Development Tools at a Glance
| # | Product | Rating | Best For | What Users Say |
|---|---------|--------|----------|----------------|
| 1 | [Postman](https://www.g2.com/products/postman/reviews) | 4.6/5.0 (1,748 reviews) | Collaborative API testing with collection-based workflows | "[The easiest way I've found to work with APIs](https://www.g2.com/survey_responses/postman-review-13046207)" |
| 2 | [MuleSoft Anypoint Platform](https://www.g2.com/products/mulesoft-anypoint-platform/reviews) | 4.5/5.0 (655 reviews) | API-led connectivity with reusable enterprise integration | "[Powerful DataWeave, Rich Connectors, and Strong API Governance with MuleSoft](https://www.g2.com/survey_responses/mulesoft-anypoint-platform-review-12850876)" |
| 3 | [Apidog](https://www.g2.com/products/apidog/reviews) | 4.8/5.0 (217 reviews) | Unified API design, testing, and documentation | "[All-in-One API Workflow That Saves Time and Keeps Everything in Sync](https://www.g2.com/survey_responses/apidog-review-12702549)" |
| 4 | [Workato](https://www.g2.com/products/workato/reviews) | 4.7/5.0 (748 reviews) | Multi-app API orchestration with low-code recipes | "[Workato helps us building complex integrations at lightning speed.](https://www.g2.com/survey_responses/workato-review-10305521)" |
| 5 | [IBM API Connect](https://www.g2.com/products/ibm-api-connect/reviews) | 4.3/5.0 (146 reviews) | End-to-end API lifecycle with DataPower-secured gateway | "[A solid API management platform that works well for basic to moderately complex solutions](https://www.g2.com/survey_responses/ibm-api-connect-review-11302546)" |
| 6 | [Boomi](https://www.g2.com/products/boomi/reviews) | 4.4/5.0 (455 reviews) | Low-code API design and cross-system integration | "[Boomi’s Powerful Integrations and AI Automation Save Us Time and Effort](https://www.g2.com/survey_responses/boomi-review-12901875)" |
| 7 | [Kong Konnect](https://www.g2.com/products/kong-inc-kong-konnect/reviews) | 4.4/5.0 (320 reviews) | Plugin-extensible API gateway for microservices cross-cutting concerns | "[From Product Creation to Future Market Dominance](https://www.g2.com/survey_responses/kong-konnect-review-9756107)" |
| 8 | [WSO2 API Platform](https://www.g2.com/products/wso2-api-platform/reviews) | 4.5/5.0 (135 reviews) | Full-lifecycle API governance with open-source extensibility | "[Flexible and Reliable Platform for API Management](https://www.g2.com/survey_responses/wso2-api-platform-review-6695482)" |
| 9 | [AWS AppSync](https://www.g2.com/products/aws-appsync/reviews) | 4.3/5.0 (87 reviews) | AWS-native GraphQL APIs with real-time sync | "[User-Friendly and Easy to Navigate](https://www.g2.com/survey_responses/aws-appsync-review-12237018)" |
| 10 | [Swagger Studio](https://www.g2.com/products/swagger-studio/reviews) | 4.5/5.0 (184 reviews) | OpenAPI-first design, documentation, and code generation | "[API Hub Review](https://www.g2.com/survey_responses/swagger-studio-review-11386691)" |


## G2 Grid® for API Development Tools
![G2 Grid® for API Development Tools plotting products by satisfaction and market presence](https://www.g2.com/categories/api-development/grids.png?focus%5B%5D=20238&focus%5B%5D=1316415&focus%5B%5D=23832&focus%5B%5D=52121&focus%5B%5D=74085&focus%5B%5D=17294&focus%5B%5D=10439&focus%5B%5D=1319004)
Highlighted products: Postman, Apidog, IBM API Connect, AWS AppSync, Apify, Kong Konnect, WSO2 API Platform, and Zuplo.
Underlying data: [Grid® JSON](https://www.g2.com/categories/api-development/grids.json?focus%5B%5D=postman&focus%5B%5D=apidog&focus%5B%5D=ibm-api-connect&focus%5B%5D=aws-appsync&focus%5B%5D=apify&focus%5B%5D=kong-inc-kong-konnect&focus%5B%5D=wso2-api-platform&focus%5B%5D=zuplo&segment=small-business)


## How Many API Development Tools Products Does G2 Track?
**Total Products under this Category:** 70

### Category Stats (Jul 2026)
- **Average Rating**: 4.49/5 (↓0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product**: Kong Insomnia (+1.02%) - Among all products in this category, Kong Insomnia recorded the largest rating increase compared to last month
*Last updated: July 16, 2026*


## How Does G2 Rank API Development Tools Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 7,200+ Authentic Reviews
- 70+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.



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---


## What Is API Development Tools?

[Development Software](https://www.g2.com/categories/development)

## What Software Categories Are Similar to API Development Tools?

- [API Management Tools](https://www.g2.com/categories/api-management)
- [iPaaS Software](https://www.g2.com/categories/ipaas)
- [API Platforms](https://www.g2.com/categories/api-platforms)


---

## How Do You Choose the Right API Development Tools?

### What You Should Know About API Development Tools

### Most Popular FAQs

#### What are API development tools?

API development tools are software platforms that help developers build, test, document, and manage APIs throughout the development lifecycle. They typically include features for designing API schemas, sending and inspecting requests and responses, automating test suites, generating documentation, and, in more advanced platforms, managing API gateways, versioning, and access controls. The category spans lightweight tools used by individual developers for quick testing all the way to enterprise platforms that govern API infrastructure across large organizations. The right tool depends on whether a team primarily needs a testing and documentation workflow or a full API lifecycle and integration management layer.

#### What does API mean in software development?

API stands for Application Programming Interface. In software development, it refers to a defined set of rules and protocols that allow one application to communicate with another without exposing the underlying code. APIs are how modern software systems exchange data and trigger actions across services — connecting front-end interfaces to back-end logic, pulling data from third-party platforms, or integrating tools like CRMs, payment processors, and databases. In a business context, APIs are the connective tissue between the tools and systems an organization runs on.

#### Which API development software has the best reviews on G2?

The highest-rated API development tools on G2, ranked by review volume, star rating, and likelihood to recommend, cover both standalone API testing and design tools and broader integration platforms. 

- [Postman](https://www.g2.com/products/postman/reviews): The most reviewed API development tool on G2 in this category by a wide margin, with strong ratings across company sizes and broad adoption among developers for API testing, documentation, and collaboration.
- [Workato](https://www.g2.com/products/workato/reviews): The second most reviewed platform in the category, rated above average on both satisfaction and recommendation scores, with a reviewer base spanning SMB and enterprise teams.
- [Apidog](https://www.g2.com/products/apidog/reviews): The highest-rated platform in the category among tools with 50 or more reviews, with strong ease-of-use and ease-of-setup scores and a fast-growing reviewer base.
- [Boomi](https://www.g2.com/products/boomi/reviews): A well-reviewed integration and API management platform with representation across SMB and enterprise buyer segments and consistently above-average satisfaction scores.

#### Which API platform is best for microservices architecture?

Microservices environments place specific demands on API tooling, requiring platforms that can handle service-to-service communication, gateway routing, and API lifecycle management across many independently deployed services.

- [Kong Gateway](https://www.g2.com/products/kong-gateway/reviews) **:** Reviewed by engineering teams specifically for API gateway use cases in distributed systems, with above-average ease-of-use scores and a reviewer base that includes organizations managing multiple backend services behind a single API layer.
- [WSO2 API Platform](https://www.g2.com/products/wso2-api-platform/reviews) **:** Among the most enterprise-reviewed platforms in the category, with reviewers at large technology organizations citing its API gateway, lifecycle management, and developer portal as strengths for teams operating across multiple services and environments.
- [MuleSoft Anypoint Platform](https://www.g2.com/products/mulesoft-anypoint-platform/reviews) **:** The most enterprise-focused platform in the category by reviewer composition, with large organization reviewers citing its integration runtime and API management layer as a fit for teams coordinating APIs across complex, service-oriented architectures.

#### Which API tool offers the most robust documentation features?

API documentation quality is one of the most cited evaluation criteria in G2 reviews for this category, with development teams prioritizing tools that keep documentation in sync with the API itself rather than treating it as a downstream manual process.

- [Apidog](https://www.g2.com/products/apidog/reviews) **:** The highest-rated platform in the category for ease of use and setup, with reviewers specifically citing its integrated documentation editor and the ability to manage design, testing, and docs within a single workspace as a primary differentiator.
- [Postman](https://www.g2.com/products/postman/reviews) **:** The most reviewed platform in the category and most commonly cited for documentation capabilities, with reviewers across company sizes noting its ability to auto-generate and publish documentation directly from API collections.
- [Apify](https://www.g2.com/products/apify/reviews) **:** A well-reviewed platform in the category with above-average ratings, cited by reviewers for its structured approach to documenting and exposing APIs built around web scraping and data extraction workflows.

### Small Business FAQs

#### What is the most affordable API development tool for small businesses?

Cost and accessibility are primary concerns for small teams and individual developers evaluating API tools on G2, with buyers in this segment favoring platforms that offer generous free tiers or low-cost entry points without sacrificing core functionality. See the full set of options on the[API Development Software SMB page](https://www.g2.com/categories/api-development/small-business).

- [Postman](https://www.g2.com/products/postman/reviews) **:** The most reviewed platform among SMB buyers in the category by a large margin, with 133 SMB reviews, reflecting its position as the default starting point for small teams and individual developers who need a capable free-tier API tool.
- [Apidog](https://www.g2.com/products/apidog/reviews) **:** The second most reviewed platform among SMB buyers and the highest rated in the category overall, with small team reviewers citing its all-in-one approach to API design, testing, and documentation as a cost-effective alternative to managing multiple tools.
- [Kong Gateway](https://www.g2.com/products/kong-gateway/reviews) **:** An open-source API gateway with a free community edition, reviewed by small teams that need lightweight API management capabilities without committing to an enterprise platform contract.

#### What is the best API development tool for startups?

Startups on G2 prioritize tools that are fast to adopt, well-documented, and capable of supporting team collaboration as engineering headcount grows. These are the most reviewed options among companies with fewer than 50 employees in the category. 

- [Workato](https://www.g2.com/products/workato/reviews) **:** The third most reviewed platform among SMB buyers, rated above the category average, with startup reviewers citing it as a practical fit for teams that need to build and expose integrations quickly without custom infrastructure.
- [Boomi](https://www.g2.com/products/boomi/reviews) **:** The fourth most reviewed platform among SMB buyers with above-average satisfaction scores, reviewed positively by growing teams that need API integration capabilities alongside their core development workflows.
- [Frends](https://www.g2.com/products/frends/reviews) **:** A well-reviewed integration platform with SMB representation in the category, cited by small teams that need a structured API and workflow automation tool that doesn't require a dedicated integration engineer to operate.

#### Which API development tool is the most user-friendly for developers?

Ease-of-use and ease-of-setup scores from G2 reviewers clearly separate a small group of tools that developers find intuitive from platforms that carry a steeper learning curve.

- [Apidog](https://www.g2.com/products/apidog/reviews) **:** Earns the highest ease-of-use score in the category among all platforms with 20 or more reviews, with developers citing its interface design and workflow consolidation as reasons it requires significantly less ramp-up time than alternatives.
- [Postman](https://www.g2.com/products/postman/reviews) **:** The second-highest ease-of-use score among well-reviewed platforms in the category, with a large reviewer base consistently praising its intuitive request-building interface and low barrier to new developers.
- [Boomi](https://www.g2.com/products/boomi/reviews) **:** Scores above WSO2, Kong, and MuleSoft on ease-of-use among platforms with 20 or more reviews, with reviewers noting its visual integration designer as a more accessible entry point for teams new to API management platforms.

#### How do small development teams manage API documentation without a dedicated technical writer?

This is a recurring challenge flagged in SMB reviews across this category on G2. Most modern API development platforms generate documentation directly from the API definition or test collections, eliminating the need for a separate documentation process entirely. Reviewers in small teams most commonly solve this by selecting a tool that produces documentation as a built-in output of the development workflow, rather than treating it as a downstream task, keeping it in sync with the API as it evolves. The platforms most frequently cited for this in SMB reviews are those that consolidate API design, testing, and documentation in a single interface rather than requiring separate tooling for each stage.

#### What API development tools work best for solo developers and consultants?

Solo developers and consultants reviewing API tools on G2 prioritize platforms that are free or low-cost for individuals, portable across client projects, and capable of producing clean documentation and test collections that can be shared without additional tooling.

- [Apify](https://www.g2.com/products/apify/reviews) **:** A well-reviewed platform with above-average ratings in the category, used by individual developers who need to build, publish, and monetize APIs built around data extraction and automation workflows without maintaining their own infrastructure.
- [Workato](https://www.g2.com/products/workato/reviews) **:** Reviewed positively by SMB and individual users building integrations for clients, with above-average satisfaction scores and a reviewer base that includes consultants who need to hand off clean, documented API workflows.
- [Frends](https://www.g2.com/products/frends/reviews) **:** A platform reviewed by small teams and individual practitioners for its low-overhead approach to API and integration workflow management, with satisfaction scores above the category floor among its reviewer base.

### Enterprise FAQs

#### What is the best-rated API development tool for tech enterprises?

Technology companies, including SaaS, IT services, and computer software firms, represent the two largest industry segments in G2 reviews for this category combined. See the full enterprise comparison on the[API development software enterprise page](https://www.g2.com/categories/api-development/enterprise).

- [Postman](https://www.g2.com/products/postman/reviews) **:** The most reviewed platform among enterprise buyers in the category, with 17 enterprise reviews and strong overall ratings, reflecting consistent use across large engineering organizations for API testing and team collaboration at scale.
- [Workato](https://www.g2.com/products/workato/reviews) **:** The second most reviewed platform among enterprise buyers, with 14 enterprise reviews, rated above the category average, and used by large teams for API-driven automation and integration workflows.
- [WSO2 API Platform](https://www.g2.com/products/wso2-api-platform/reviews) **:** The third most reviewed platform among enterprise buyers with 7 enterprise reviews, noted by large organization reviewers for its API gateway, lifecycle management, and developer portal capabilities.

#### What is the most reliable API development platform for enterprises?

Enterprise engineering teams on G2 evaluate reliability through API gateway uptime, platform performance under load, quality of vendor support, and stability of integrations with existing development toolchains.

- [MuleSoft Anypoint Platform](https://www.g2.com/products/mulesoft-anypoint-platform/reviews): Among the most enterprise-reviewed platforms in the category, with large organization reviewers citing its maturity and depth as a reliable foundation for managing APIs and integrations in production environments at scale.
- [Kong Gateway](https://www.g2.com/products/kong-gateway/reviews): Reviewed by enterprise teams for its API gateway performance and open-core architecture, with engineering organizations citing its lightweight footprint and horizontal scalability as reliability strengths under high traffic loads.
- [Boomi](https://www.g2.com/products/boomi/reviews): Reviewed across both SMB and enterprise segments with consistently above-average satisfaction scores, with enterprise buyers citing platform stability and a broad connector library as key factors for production reliability.

#### What is the best-reviewed API development tool for enterprise app integration?

Integration depth is the most critical evaluation criterion for enterprise buyers in this category, with large organizations prioritizing platforms that can connect internal systems, third-party services, and external APIs without creating long-term maintenance overhead.

- [MuleSoft Anypoint Platform](https://www.g2.com/products/mulesoft-anypoint-platform/reviews): The most enterprise-focused platform in the category by reviewer composition, with large organization reviewers consistently citing its integration runtime, connector ecosystem, and API management layer as primary reasons for selection over other tools.
- [WSO2 API Platform](https://www.g2.com/products/wso2-api-platform/reviews): Reviewed positively by enterprise buyers for its flexibility in managing APIs across hybrid and multi-cloud environments, with above-average enterprise satisfaction scores from teams running complex integration topologies.
- [Workato](https://www.g2.com/products/workato/reviews): The highest-rated platform among enterprise-reviewed tools with 10 or more enterprise reviews, with large organization buyers citing its pre-built connector library and low-code automation layer as strengths for connecting enterprise applications through APIs.

#### Which API development platforms are best suited for financial services enterprises?

Financial services and banking together represent the largest non-technology industry segment in G2 reviews for this category, with buyers in these verticals placing particular weight on security controls, audit logging, and compliance with data handling requirements.

- [MuleSoft Anypoint Platform](https://www.g2.com/products/mulesoft-anypoint-platform/reviews): Reviewed by enterprise teams in financial services for its API security policies, traffic management, and compliance-oriented design, with large organization buyers citing its maturity in regulated industries as a key differentiator.
- [WSO2 API Platform](https://www.g2.com/products/wso2-api-platform/reviews): Noted by enterprise reviewers for its open-source flexibility and strong security layer, a fit for financial services teams that need to maintain direct control over their API infrastructure rather than relying on a fully managed SaaS platform.
- [Frends](https://www.g2.com/products/frends/reviews): A platform with enterprise representation in its reviewer base and above-average satisfaction scores, reviewed by teams in regulated industries that need a structured integration and API workflow tool with clear auditability.

#### What do enterprise buyers most commonly dislike about API development software?

The most consistently cited dislikes include steep learning curves for platforms with broad feature sets, pricing that scales aggressively with usage or team size, and documentation that doesn't keep pace with platform updates. For integration-focused platforms like MuleSoft, reviewers frequently flag implementation complexity and dependence on specialized expertise as high ongoing costs beyond licensing. Postman enterprise reviewers cite collaboration feature limitations and version control at scale as recurring pain points. Evaluating onboarding support quality and total cost of ownership, including professional services, is strongly recommended before committing to an enterprise contract.

Last updated on April 23, 2026