Railsware is a Ukrainian-founded product studio and software development agency headquartered in Kyiv, Ukraine.[1] The company provides product development and software engineering services while building its own SaaS solutions, including Mailtrap, Coupler.io, and productivity tools under the TitanApps brand.[2] In 2024, the company was listed in the Inc. 5000 ranking of fast-growing companies.[3]
Railsware was founded in 2007 as a Ruby on Rails engineering team and gradually evolved into a product studio model combining client-facing consulting with in-house product development.[4] In its early years, the company focused on software engineering for startups and later began launching proprietary products. In 2024, Forbes Ukraine included Railsware among twenty long-standing Ukrainian IT companies that have continuously developed their own products for over a decade.[5] In 2025 the company was named among top 100 Ruby on Rails development companies by Techreviewer.co.[6]
Operations and services
Railsware provides software engineering, product design, and consulting services for startups and enterprises. Its projects include product discovery, end-to-end web and mobile development, and data & analytics engagements.[7] The company also offers consulting in AI and machine learning for business applications and process automation.[8][9]
Products
Mailtrap – a cloud-based email delivery platform that originated as an internal tool at Railsware and later became a standalone SaaS product.[10][11]
Coupler.io – a data integration and analytics platform used for business intelligence and marketing reporting. In 2025, it launched AI-powered features for automated insights.[12]
TitanApps – a suite of productivity tools (including Smart Checklist for Jira), into which Railsware committed a US$10 million investment to expand development and global distribution.[13][14]
The company's SaaS portfolio focuses on developer productivity, data analytics, and workflow automation.
Clients
Railsware contributed to the development of Calendly, building the platform’s early minimum viable product (MVP) before its launch in 2013.[15] In a 2022 profile, Forbes reported that Tope Awotona, Calendly’s founder, engaged Railsware in Kyiv to build the initial version of the product.[16] The agency has also collaborated with clients such as ParentSquare[17] and TradeZella.
Recognition
In August 2024, Railsware ranked No. 1,607 on the Inc. 5000 list of the fastest-growing companies in the United States.[18] The company has been featured by Forbes Ukraine and Speka as one of the most established Ukrainian product studios and among the leading developers investing in long-term SaaS ventures.[19]
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