Details
| Founded: | 2009 |
|---|---|
| Hourly Rates: | $25 - $49 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $100,000+ |
| Ratings: |
4.6
7 Reviews
|
Industries Served
About
OpenSource Technologies (OST) is an IT services provider company specialized in Mobile app solutions. OST developers, project managers and analyst expert team have 15+ year experience in their filed. In past, we worked more than 200 projects with maximum client satisfaction. OST received 2016 BEST Manhattan Designer Award. What makes us different from other, is our quick response time and on time delivery.
OpenSource Technologies Reviews
Accessibility work broadened our reach and impressed clients we didn't expect it to matter to
Ritika Bhattacharya / VP of Product | May 24, 2026Five months post-launch, we're running at roughly double the transaction volume we'd specified in the original scope document, and the platform hasn't needed a single structural change to handle it. That's the real tell for whether a team designed for what you told them versus what you were actually going to need. We're now scoping a second phase and I expect this to be a multi-year relationship at this point.
Project summary
Our internal engineering capacity was fully committed to keeping existing systems running, with no room for a build of this size. An outside partner with the right depth was really our only option.
| 5.0 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 5.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | UI/UX Design |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Nov 2025 - Apr 2026 |
| Business Type: | Food & Beverage |
|---|---|
| Location: | Ahmedabad, India |
Questions & Answers
Their pen test found gaps our previous vendor had missed two years running
Kenji Watanabe / Director of IT Strategy | May 18, 2026I went into this engagement genuinely skeptical. A previous vendor had left us with a system that technically worked but that nobody trusted, and I wasn't interested in repeating that experience. This team earned trust the slow way — solid discovery documentation, technical proposals that held up under scrutiny, sprints that landed when promised, and ultimately a production system that has simply behaved. I don't open conversations about them with caveats anymore.
Project summary
A previous project had worked fine in staging and fallen apart in production. We approached vendor selection this time with a lot more scrutiny as a direct result.
| 4.5 Overall Rating |
| 5.0 Quality |
| 5.0 Schedule |
| 4.5 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Cybersecurity |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Jun 2025 - Apr 2026 |
| Business Type: | Sports & Fitness |
|---|---|
| Location: | Yokohama, Japan |
Questions & Answers
The observability stack caught three incidents before a single user reported anything
Henrik Schuster / VP of Technology | May 02, 2026Going in, the integration work was what worried me most. Our systems landscape is messy, a couple of the third-party APIs we depend on are barely documented, and one of those vendors has a well-earned reputation for slow, inconsistent support. This team absorbed all of that. They documented what the upstream providers wouldn't, built in resilience wherever the upstream behavior was flaky, and shipped something that has worked exactly as specified since go-live. I genuinely couldn't have asked for more on that front.
Project summary
Our headcount had grown faster than our platform engineering depth. We needed an experienced team to close that gap while we hired, without letting quality or the roadmap slip in the meantime.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 4.5 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | DevOps Services |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Sep 2025 - Feb 2026 |
| Business Type: | Information Technology |
|---|---|
| Location: | Bremen, Germany |
Questions & Answers
Rare skill: explained serious findings clearly to people with zero security background
Anton Berggren / Chief Technology Officer | Apr 22, 2026Our stakeholder list for this project included board members, operations leads, compliance, and end users, all with wildly different levels of technical fluency and different definitions of success. Managing that mix well is genuinely hard, and this team did it better than any vendor we've worked with. They shifted register depending on who they were talking to without ever dumbing down the substance, kept expectations honest the whole way through, and delivered something each group could point to as meeting their own bar. That range is rare.
Project summary
Our internal engineering capacity was fully committed to keeping existing systems running, with no room for a build of this size. An outside partner with the right depth was really our only option.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 4.5 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Cybersecurity |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Apr 2025 - Jan 2026 |
| Business Type: | Human Resources |
|---|---|
| Location: | Malmö, Sweden |
Questions & Answers
Makes you wonder why we tolerated the previous site's load times for as long as we did
Mahnoor Sheikh / Head of Technology | Apr 17, 2026This was our fourth agency in three years, and I say that with some embarrassment. Every previous engagement had looked promising on paper and fallen apart somewhere in delivery. What was different here was the sequencing: they spent real time understanding the actual problem before proposing anything, rather than pattern-matching to a solution they already knew how to sell. The build ran to schedule, our own engineers had genuinely positive things to say during handover, and four months into live operation we haven't had a single critical incident. We're already talking about the next phase with them.
Project summary
Portal usability complaints were showing up disproportionately among the B2B accounts we were about to lose at renewal. The self-service experience needed a full rebuild before that cycle hit.
| 4.5 Overall Rating |
| 5.0 Quality |
| 4.0 Schedule |
| 4.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Web Development |
|---|---|
| Project Cost: | $500,000+ |
| Project Duration: | Sep 2025 - Mar 2026 |
| Business Type: | Telecommunications |
|---|---|
| Location: | Faisalabad, Pakistan |
Questions & Answers
The first CMS rollout where editors asked for more of it, not less
Rodrigo Cardoso / VP of Technology | Mar 08, 2026What actually moved the needle wasn't their ability to follow a spec — any competent team can do that. It was their willingness to push back when a requirement didn't make sense, explain clearly why, and help us decide on something better instead. That extra layer of judgment took the final product past what we'd actually asked for and closer to what we genuinely needed, which isn't always the same thing.
Project summary
Our product thinking internally was solid, but our execution depth in this particular technical domain wasn't. We needed real specialists, not another generalist team.
| 4.5 Overall Rating |
| 5.0 Quality |
| 4.5 Schedule |
| 4.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | CMS Development |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Jun 2025 - Dec 2025 |
| Business Type: | Agriculture |
|---|---|
| Location: | Rio de Janeiro, Brazil |
Questions & Answers
Started as a single project and earned a permanent spot on our preferred vendor list
Sameer Kapoor / Chief Data Officer | Feb 04, 2026What actually moved the needle wasn't their ability to follow a spec — any competent team can do that. It was their willingness to push back when a requirement didn't make sense, explain clearly why, and help us decide on something better instead. That extra layer of judgment took the final product past what we'd actually asked for and closer to what we genuinely needed, which isn't always the same thing.
Project summary
Expanding internationally meant we suddenly needed multi-currency, multi-language, and multi-warehouse support that our existing platform simply wasn't architected for.
| 4.5 Overall Rating |
| 5.0 Quality |
| 4.5 Schedule |
| 5.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Low-Code / No-Code Development |
|---|---|
| Project Cost: | $150,000 to $499,999 |
| Project Duration: | Jan 2025 - Nov 2025 |
| Business Type: | Retail & E-commerce |
|---|---|
| Location: | Gurugram, India |
Questions & Answers
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