# Best Enterprise Online Fax Software *By [Nana Serwah Nkrahene](https://research.g2.com/insights/author/nana-nkrahene)* Products classified in the overall Online Fax category are similar in many regards and help companies of all sizes solve their business problems. However, enterprise business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Enterprise Business Online Fax 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 Enterprise Business Online Fax category. In addition to qualifying for inclusion in the Online Fax Software category, to qualify for inclusion in the Enterprise Business Online Fax Software category, a product must have at least 10 reviews left by a reviewer from an enterprise business. ## Category Overview **Total Products under this Category:** 71 ## Trust & Credibility Stats **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 4,200+ Authentic Reviews - 71+ 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. --- **Sponsored** ### iFax iFax is an enterprise-grade, cloud-based fax and document exchange platform built for regulated industries that require secure, compliant, and scalable communication workflows. Designed for healthcare, finance, government, and legal operations, iFax provides HIPAA, GLBA, FERPA, and SOC 2 aligned workflows, complete with audit logs, encryption, BAAs, and granular admin controls. iFax replaces legacy fax servers and outdated FoIP systems with a modern, cloud-native platform that supports secure transmissions, EHR/EMR integrations, MFP connectivity, and developer-friendly APIs. Teams can send, receive, automate, and monitor high-volume fax workflows across departments and distributed environments using web, email, or mobile apps. With a mature infrastructure, global availability, and a proven track record across thousands of organizations, iFax enables regulated teams to exchange sensitive data with high reliability and at scale. The platform supports automated routing, AI-assisted data extraction, and no-code workflows, helping enterprises meet strict compliance requirements while reducing operational burden. [Try for Free](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1466&secure%5Bdisplayable_resource_id%5D=1466&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1466&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=81124&secure%5Bresource_id%5D=1466&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fonline-fax%2Fenterprise&secure%5Btoken%5D=d710966f6274e1c9286569f7f49a61e2f7e70e29b89c9d582acf865d8563b15a&secure%5Burl%5D=https%3A%2F%2Fwww.ifaxapp.com%2Flogin%2Fhttps%3A%2F%2Fwww.ifaxapp.com%2Flogin%2F%3Futm_source%3Dg2%26utm_medium%3Dcta%26utm_campaign%3Dfree_trial&secure%5Burl_type%5D=free_trial) --- ## Top-Rated Products (Ranked by G2 Score) ### 1. [RingEX](https://www.g2.com/products/ringex/reviews) RingEX is the all-in-one business communications platform that connects teams, customers, and conversations across voice, video, messaging, and SMS, all powered by AI. Designed for organizations that value productivity, customer satisfaction, and simplicity, RingEX brings together everything your business needs to collaborate and engage effectively from anywhere. With built-in AI capabilities like the RingCentral Personal AI Assistant, RingEX helps every employee work smarter. Capture and summarize meetings automatically, generate follow-up actions, and compose clear messages in seconds. AI-driven insights make conversations more productive and ensure that critical information never gets lost. New: Customer Engagement Bundle For customer-facing teams, RingEX now offers the Customer Engagement Bundle — a new tier purpose-built for small to mid-sized businesses that need to deliver faster, more connected support without the complexity of a full contact center. The bundle seamlessly blends voice and SMS support in one unified workspace, so your team can manage every customer conversation together. Key capabilities include: Shared SMS Inbox: Give teams shared visibility into customer text threads to ensure no message is missed. SMS Opt-Out Compliance: Simplify regulatory adherence and protect customer trust. Reply Templates: Speed up response times while maintaining a consistent brand voice. Queue Transparency: Show callers their place in line or offer convenient callbacks to reduce frustration. RingCentral Live Reports: Gain real-time visibility into call queues and agent performance to optimize staffing and improve service quality. Why RingEX: Whether your team is connecting internally or engaging customers, RingEX delivers reliability, flexibility, and intelligence in one platform. Built on a 99.999% uptime SLA and backed by enterprise-grade security, RingEX helps you stay connected and responsive at every moment that matters. RingEX customers gain: Smarter communication with AI — Work faster and reduce manual tasks with the built-in Personal AI Assistant. Unified collaboration — Seamless voice, video, messaging, and SMS in one platform. Better customer experiences — Real-time insights, automated workflows, and faster responses through the Customer Engagement Bundle. RingEX isn’t just a phone system. It’s how modern businesses keep every conversation — internal or external — connected, intelligent, and impactful. **Average Rating:** 4.2/5.0 **Total Reviews:** 1,311 **User Satisfaction Scores:** - **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.8/10) - **Ease of Use:** 8.6/10 (Category avg: 8.8/10) - **Storage:** 8.1/10 (Category avg: 8.5/10) - **Contact Management:** 8.9/10 (Category avg: 8.5/10) **Seller Details:** - **Seller:** [RingCentral](https://www.g2.com/sellers/ringcentral) - **Company Website:** https://www.ringcentral.com - **Year Founded:** 1999 - **HQ Location:** Belmont, CA - **Twitter:** @RingCentral (62,114 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/60868/ (6,686 employees on LinkedIn®) **Reviewer Demographics:** - **Who Uses This:** Office Manager, Owner - **Top Industries:** Computer Software, Information Technology and Services - **Company Size:** 56% Small-Business, 34% Mid-Market #### Pros & Cons **Pros:** - Ease of Use (216 reviews) - Customer Support (127 reviews) - Phone Calls (109 reviews) - Helpful (108 reviews) - Reliability (107 reviews) **Cons:** - Poor Customer Support (55 reviews) - Complex Processes (49 reviews) - Customer Service (49 reviews) - Call Issues (47 reviews) - Customer Support (47 reviews) ### 2. [Upland InterFAX](https://www.g2.com/products/upland-interfax/reviews) Upland InterFAX is an enterprise-class cloud fax solution designed to facilitate the sending and receiving of documents for global organizations. This innovative platform streamlines digital workflows while enhancing fax capabilities for AI-driven data processing. By leveraging cloud technology, InterFAX allows businesses to operate efficiently, regardless of their physical location, making it an essential tool for modern workplaces. The target audience for Upland InterFAX includes businesses of all sizes that require reliable and secure document transmission. This solution is particularly beneficial for organizations with remote workforces, as it enables employees to manage their faxing needs from anywhere, thus improving productivity. InterFAX is well-suited for industries such as healthcare, finance, and legal services, where secure document handling is paramount. With its robust features, it addresses the challenges of traditional faxing methods by offering a more streamlined and efficient approach. One of the key features of Upland InterFAX is its seamless integration with various applications, allowing users to incorporate faxing capabilities directly into their existing workflows. This is complemented by a scalable and customizable Developer API, which provides organizations with the flexibility to tailor the solution to their specific needs. By automating fax processes, businesses can reduce manual errors and save time, ultimately leading to enhanced operational efficiency. Additionally, Upland InterFAX prioritizes security, ensuring that sensitive information is protected during transmission. The platform complies with industry standards, making it a trustworthy choice for organizations that handle confidential documents. The ability to enhance faxes for AI-driven data processing further distinguishes InterFAX from traditional fax solutions, as it enables users to extract valuable insights from their documents, facilitating better decision-making. Overall, Upland InterFAX stands out in the cloud fax category by offering a comprehensive solution that meets the demands of modern businesses. Its combination of ease of use, robust security features, and integration capabilities makes it a valuable asset for organizations looking to improve their document management processes. By embracing this cloud-based solution, companies can enhance their workflows and adapt to the evolving landscape of remote work. **Average Rating:** 4.6/5.0 **Total Reviews:** 143 **User Satisfaction Scores:** - **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.8/10) - **Ease of Use:** 9.3/10 (Category avg: 8.8/10) - **Storage:** 8.2/10 (Category avg: 8.5/10) - **Contact Management:** 8.4/10 (Category avg: 8.5/10) **Seller Details:** - **Seller:** [Upland Software](https://www.g2.com/sellers/upland-software) - **Company Website:** https://uplandsoftware.com/ - **Year Founded:** 2010 - **HQ Location:** Austin, TX - **LinkedIn® Page:** https://www.linkedin.com/company/3139095/ (828 employees on LinkedIn®) - **Ownership:** NASDAQ:UPLD **Reviewer Demographics:** - **Top Industries:** Hospital & Health Care, Medical Practice - **Company Size:** 49% Small-Business, 35% Mid-Market #### Pros & Cons **Pros:** - Ease of Use (35 reviews) - Faxing Services (33 reviews) - Simple (14 reviews) - Setup Ease (12 reviews) - Reliability (10 reviews) **Cons:** - Fax Issues (10 reviews) - Limitations (2 reviews) - Limited Customization (2 reviews) - Messaging Issues (2 reviews) - Outdated Design (2 reviews) ### 3. [OpenText Core Fax](https://www.g2.com/products/opentext-core-fax/reviews) XM Fax is the leading software-based, enterprise-grade Fax over IP (FoIP) solution that makes reliably sending and receiving faxes as easy as using email. At the same time, it also reduces costs and improves security. XM Fax is available either on-premises or via certified ISO/IEC 27001:2013 and PCI DSS compliant cloud solution. XM Fax is designed from the ground up to streamline compliance with HIPAA, GDPR, FERPA, SOX, PCI DSS, and other regulations through features like an event log and optional zero retention. Integrations with MFPs, EMR/EHR solutions, and Exchange/Outlook, as well as free XM Fax iOS/Android mobile apps, further simplify workflows. OpenText is a global leader in the field of enterprise communications solutions. Its suite of enterprise-grade on-premises and cloud fax solutions enable businesses to exchange sensitive and confidential data that meets and exceeds industry regulatory compliance requirements. The company serves businesses, enterprises, and service providers through a global team of customer-focused employees. Its solutions are deployed worldwide across a number of sectors, including education, finance, government, healthcare, manufacturing, retail, and legal services. **Average Rating:** 4.5/5.0 **Total Reviews:** 46 **User Satisfaction Scores:** - **Has the product been a good partner in doing business?:** 9.1/10 (Category avg: 8.8/10) - **Ease of Use:** 9.2/10 (Category avg: 8.8/10) - **Storage:** 9.4/10 (Category avg: 8.5/10) - **Contact Management:** 8.4/10 (Category avg: 8.5/10) **Seller Details:** - **Seller:** [OpenText](https://www.g2.com/sellers/opentext) - **Year Founded:** 1991 - **HQ Location:** Waterloo, ON - **Twitter:** @OpenText (21,588 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/2709/ (23,339 employees on LinkedIn®) - **Ownership:** NASDAQ:OTEX **Reviewer Demographics:** - **Top Industries:** Higher Education, Information Technology and Services - **Company Size:** 47% Mid-Market, 40% Enterprise ### 4. [Documo](https://www.g2.com/products/documo/reviews) Documo is an AI-powered healthcare document automation platform combining HIPAA-compliant cloud fax with Intelligent Document Processing (IDP) to automate the full lifecycle of unstructured clinical document intake, from the moment a document arrives through classification, data extraction, patient matching, and direct delivery into the EHR. Where most cloud fax solutions stop at secure transmission, Documo goes further, treating every inbound document as structured data waiting to be unlocked. Its AI automatically reads, classifies, and extracts field-level information from referrals, prior authorizations, lab results, consent forms, and clinical records, then routes that data directly into PointClickCare, ModMed, NextGen, and other connected EHR and practice management systems with no manual intervention required. Built for mid-to-large health systems, healthcare organizations, and healthtech integrators, Documo eliminates the document processing bottlenecks that slow care coordination, create compliance risk, and consume clinical and administrative staff time every day. Documo customers see dramatic reductions in manual document handling, faster care coordination, and measurable ROI from day one. If your team is still manually processing faxed referrals, prior authorizations, or clinical records, Documo can help. Schedule a demo today and see how leading healthcare organizations are turning document chaos into automated, EHR-ready workflows. **Average Rating:** 4.6/5.0 **Total Reviews:** 187 **User Satisfaction Scores:** - **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 8.8/10) - **Ease of Use:** 9.4/10 (Category avg: 8.8/10) - **Storage:** 8.8/10 (Category avg: 8.5/10) - **Contact Management:** 8.8/10 (Category avg: 8.5/10) **Seller Details:** - **Seller:** [Documo](https://www.g2.com/sellers/documo) - **Company Website:** https://www.documo.com - **Year Founded:** 2014 - **HQ Location:** Wilmington, DE - **LinkedIn® Page:** https://www.linkedin.com/company/18105417/ (52 employees on LinkedIn®) **Reviewer Demographics:** - **Who Uses This:** Owner, CEO - **Top Industries:** Hospital & Health Care, Information Technology and Services - **Company Size:** 61% Small-Business, 31% Mid-Market #### Pros & Cons **Pros:** - Faxing Services (40 reviews) - Ease of Use (35 reviews) - Reliability (25 reviews) - Simple (17 reviews) - Affordable (16 reviews) **Cons:** - Fax Issues (17 reviews) - Limitations (6 reviews) - Difficult Learning Process (3 reviews) - Expensive (3 reviews) - Interface Usability (3 reviews) ### 5. [OpenText Fax (RightFax)](https://www.g2.com/products/opentext-fax-rightfax/reviews) OpenText™ RightFax is a centralized fax server solution that provides the best foundational platform for secure faxing capabilities across an entire organization. As the most powerful fax server in the industry, organizations leverage RightFax to build a robust communication ecosystem that is integrated and automated to reduce risk, enable compliance, and accelerated time to revenue. RightFax integrates fax with email, desktop, and document management applications, and enables high-volume, automated fax delivery from CRM, ERP, ECM, vertical and other host applications. When you need to integrate fax with applications that control your business processes, RightFax is the fax server that accelerates the speed at which you do business. **Average Rating:** 4.1/5.0 **Total Reviews:** 20 **User Satisfaction Scores:** - **Has the product been a good partner in doing business?:** 7.0/10 (Category avg: 8.8/10) - **Ease of Use:** 8.1/10 (Category avg: 8.8/10) - **Storage:** 10.0/10 (Category avg: 8.5/10) - **Contact Management:** 10.0/10 (Category avg: 8.5/10) **Seller Details:** - **Seller:** [OpenText](https://www.g2.com/sellers/opentext) - **Year Founded:** 1991 - **HQ Location:** Waterloo, ON - **Twitter:** @OpenText (21,588 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/2709/ (23,339 employees on LinkedIn®) - **Ownership:** NASDAQ:OTEX **Reviewer Demographics:** - **Top Industries:** Hospital & Health Care, Insurance - **Company Size:** 55% Enterprise, 32% Mid-Market ## Parent Category [Collaboration & Productivity Software](https://www.g2.com/categories/collaboration-productivity)