Top 10 Alternatives to GSTIN API Recently Reviewed By G2 Community
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Postman enables teams to efficiently collaborate at every stage of the API lifecycle while prioritizing quality, performance, and security.
Celigo is the intelligent automation platform built for the AI era. An enterprise-ready iPaaS, Celigo helps organizations unify applications, automate complex operations, and scale digital ecosystems. The platform supports cloud integration, SaaS integration, enterprise application integration, and agentic automation under a single governance model. The platform is accessible to both business teams and developers — anyone can build, configure, and maintain integrations through natural language, while technical teams retain full control over architecture, security, and extensibility. Through an extensive library of 1,000+ prebuilt connectors, organizations can rapidly integrate systems such as ERP, CRM, ecommerce, finance, and support platforms — including NetSuite, Salesforce, SAP, Microsoft Dynamics, and Shopify — while maintaining flexibility for custom integrations and advanced API management. Celigo supports a wide range of enterprise integration scenarios including ERP integration, CRM integration, B2B integration, and EDI (electronic data interchange) workflows. These capabilities allow organizations to streamline supplier, partner, and customer data exchange while ensuring reliable data integration across internal and external systems. Built-in tools for data mapping, data transformation, and data synchronization ensure that information moves accurately and consistently between applications. What sets Celigo apart is its ability to span the full spectrum of automation — from deterministic, rules-based workflows to AI-driven decision-making — without requiring separate platforms or governance models. Celigo Agent Builder enables teams to create AI agents that reason and act across enterprise systems, with configurable guardrails that enforce business policy at runtime. Human-in-the-loop approvals ensure sensitive actions require explicit authorization before execution, and complete audit trails support compliance across every AI interaction. Celigo's MCP Server exposes enterprise capabilities through the Model Context Protocol, giving any AI agent — built inside Celigo or externally — secure, governed, auditable access to the full enterprise tech stack. This makes Celigo a foundational layer for enterprise AI orchestration, enabling organizations to connect external agents to internal systems without sacrificing control or visibility. Celigo Ora, the platform's natural language interface, makes the entire platform accessible through conversation. Anyone — including business teams without technical training — can build, modify, troubleshoot, and maintain integrations and automations by describing what they need in plain language. This eliminates the specialist bottleneck not just for building automations, but for ongoing maintenance and issue resolution as well. To accelerate deployment, Celigo offers fully managed Integration Apps and reusable integration templates that simplify common use cases such as order-to-cash automation, ecommerce integrations, and financial data flows. Centralized monitoring, runtime governance controls, and scalable architecture give enterprises full visibility into integration and automation processes while maintaining reliability and compliance. Designed for modern IT and operations teams, Celigo empowers enterprises to unify integration, automation, and AI on a single platform — scaling capacity without scaling headcount, and building a durable foundation for digital transformation across the entire application landscape.
Avalara helps businesses of all sizes achieve compliance with sales and use, excise, communications, VAT other transactional tax requirements by delivering comprehensive, automated, cloud-based solutions that are fast, accurate, and easy to use. Avalara’s Compliance Cloud™ platform is designed to effectively manage complicated and burdensome tax compliance obligations imposed by state, local, and other taxing authorities in the United States and internationally.
HAProxy is an open-source software load balancer and reverse proxy for TCP, QUIC, and HTTP-based applications. It provides high availability, load balancing, and best-in-class SSL processing. HAProxy One is an application delivery and security platform that combines the HAProxy core with enterprise-grade security layers, management and orchestration, cloud-native integration, and more. Platform components: HAProxy Enterprise: a flexible data plane layer for TCP, UDP, QUIC, and HTTP-based applications that provides high-performance load balancing, high availability, an API/AI gateway, container networking, SSL processing, DDoS protection, bot detection and mitigation, global rate limiting, and a web application firewall (WAF). HAProxy Fusion: a scalable control plane that provides full-lifecycle management, observability, and automation of multi-cluster, multi-cloud, and multi-team HAProxy Enterprise deployments, with infrastructure integration for AWS, Kubernetes, Consul, and Prometheus. HAProxy Edge: a globally distributed application delivery network that provides fully managed application delivery and security services, a secure partition between external traffic and origin networks, and threat intelligence enhanced by machine learning that powers the security layers in HAProxy Fusion and HAProxy Enterprise. Learn more at HAProxy.com.
Anypoint Platform™ is a complete platform that lets companies realize business transformation through API-led connectivity. It is is a unified, flexible integration platform that solves the most challenging connectivity problems across SOA, SaaS and APIs.
The only intelligent automation platform that enables both business users and IT to build, operate and rollout app and data integration, process and workflow automation, in a single platform - without compromising security and governance.
Data & application integration suite providing business users a quick, cost-effective and simple way to design, deploy and manage a broad range of integrations.
Singular powers marketers to drive faster growth with next-gen attribution, full-funnel analytics, and best-in-class fraud prevention.
Boomi connects any combination of cloud & on-premise applications directly from the web with no software, coding or appliances to install.
Vertex combines the latest tax research with robust technology to improve tax accuracy and consistency on sales and purchase transactions. This powerful automation supports high volume and complex transactions at speed and scale to streamline internal processes and improve audit performance. Cloud and on-premise deployment options allow companies to choose the right fit for their IT and business needs. Integrations to ERP, e-commerce, procurement, and other billing systems enable a single tax engine to seamlessly support a growing business. In addition to tax determination, Vertex provides tools and services to automate and streamline exemption certificate management and compliance filings.