The start of May has been wild! As fast as cherry blossoms bloom and fade, developer tools are evolving, with AI automating coding and inference tasks at breakneck speed. Unified platforms are slashing devtool sprawl, open-source projects are igniting collaboration, and enterprise security plus mobile optimization are scaling to meet demand.
Statsig’s $100M raise, our DevTool of the Week, proves data-driven platforms are critical for staying ahead. But can developers adopt these tools quickly enough to tame AI’s complexity? This week’s DevNewsletter digs into the trends driving software development forward.
🏆 Funding Wins
Doubleword’s $12M Leap Lights Up Enterprise AI
London-based Doubleword (prev. TitanML), streamlines enterprise AI with self-hosted inference infrastructure. The team secured $12M in a Series A led by Dawn Capital, joined by K5 Global, Clem Delangue, and Florian Douetteau. Co-founded by Meryem Arik, Jamie Dborin and Fergus Finn, PhD, Doubleword empowers businesses to deploy AI models effortlessly, tackling the inference bottleneck.
We eliminate the heavy lifting of inference at scale so they can go from idea to production faster, without racking up technical debt. – Arik
With plans to expand partnerships with tech giants like Nvidia, the team is poised to redefine AI deployment. Congrats to the team.
See all the details at Doubleword’s blog.
AppSignal Funding Banner (Source: Appsignal Website)
AppSignal Amplifies Developer Monitoring with $22M Boost
Since 2012, AppSignal’s Thijs Cadier, Wes Oudshoorn, Roy Tomeijand the team have built a developer-loved APM platform, now serving 2,000+ organizations with Ruby, Elixir, and Node.js monitoring. A $22M injection from Elsewhere Partners welcomes new CEO Brandon Swalve to steer U.S. expansion and broader language support. Rooted in sustainable growth, the team’s ready to make AppSignal a household name. Here’s to their next chapter!
Read the full story at AppSignal’s blog.
Cast AI Skyrockets Cloud Optimization with $108M
Over 2,100 organizations, from BMW to HuggingFace, trust Cast AI’s Application Performance Automation to optimize Kubernetes and AI workloads. Founders Yuri Frayman, Leon Kuperman, and Laurent Giljust landed $108M in a Series C, led by G2 Venture Partners and SoftBank Vision Fund 2, with Aglaé Ventures joining the ride. With global offices sprouting and a knack for slashing cloud waste, the team’s redefining efficiency.
Learn more at Cast AI’s press release.
CodeAnt AI Zaps Code Review Woes with $2M
CodeAnt AI (YC W24) is saving developers from pull request purgatory. Their $2M seed from Y Combinator and VitalStage Ventures backs AI-driven reviews that catch bugs instantly across GitHub and more. Serving 50+ teams and cutting review times by 50%, the team’s one-click fixes are a game-changer. Awesome work!
“Today, when a developer submits a change request, it often sits idle for hours or even days waiting for peer review…And even when a reviewer does pick it up, they rarely have full context. This is a critical risk point, most software bugs and vulnerabilities slip through at this stage. CodeAnt AI is built to do both helping companies move faster and stay competitive without compromising on security or code quality.” – Amartya Jha (Co-founder and CEO of CodeAnt AI)
Try it at CodeAnt AI’s website.
+ Statsig raise a hugely impressive $100m – read more about Statsig and this milestone in our DevTool of the Week section below
🚀 3, 2, 1… Launches
Zencoder Unleashes Collaborative AI with Zen Agents
Zencoder’s Zen Agents platform, launched this week, transforms software development by enabling teams to create and share specialized AI tools. Andrew F.’s team addresses collaboration gaps with an open-source marketplace and a 100+ server Model Context Protocol registry for LLMs like Anthropic.
“I’m a big believer in collective intelligence…There are so many use cases that we haven’t even thought of yet…” – Filev
From automating code reviews to accessibility fixes, Zen Agents cuts repetitive tasks, boosting enterprise efficiency.
Check our all the details in this VentureBeat’s article.
Theta Banner (Source: LinkedIn) Devtool developer tools AI platforms
Theta Supercharges AI Agents with Self-Learning Memory
Launched last week, Theta (YC X25)‘s intelligent memory layer empowers AI agents to learn from past runs, enhancing accuracy and speed. Rayan Garg, Tanmay Sharma, and Gurvir Singh’s platform integrates with four lines of code, improving OpenAI Operator’s accuracy by 43% and reducing steps 7x via real-time reinforcement learning. By tackling static agent limitations, Theta ensures dynamic workflow adaptation. The team’s bold step forward is a win for reliable AI!
Watch the demo at Theta’s YouTube.
ParaQuery Blitzes Data Processing with GPU Muscle
ParaQuery debuted its GPU-accelerated Spark + SQL engine, slashing big data costs up to 5x compared to BigQuery. The team who just launched on YC, delivers serverless efficiency, integrating with Spark-compatible systems across clouds with minimal query changes. Built to end long waits for analytical queries, ParaQuery simplifies inputs and logic for developers. This launch marks a powerful stride in data infrastructure optimization. Congrats to founder Win Wang!
Sign up at ParaQuery’s website.
Tesseral Fortifies B2B SaaS with Open-Source Auth
Tesseral launched its open-source auth infrastructure for B2B SaaS, backed by $3.3M in seed funding. Founded by Ned O’Leary, Ulysse Carion, Blake Williams, and Megan O’Leary, the Tesseral platform offers enterprise-grade SSO, MFA, and SCIM, deployable in an afternoon. Tailored for high-growth SaaS, it provides sleek login pages and self-service settings, outshining Auth0 for developer ease. The team’s free hosted service invites experimentation. Exciting stuff!
Explore the docs at Tesseral’s website.
🗞️ Acquisitions
BrowserStack Acquires Requestly to Speed Up Web Testing
BrowserStack acquired Requestly, an open-source tool for HTTP interception and API mocking, to boost developer workflows. Founded in 2021 by Sachin Jain and Sagar Soni, Requestly helps 200,000+ developers bypass backend delays, saving ~2 hours weekly. Its browser-based approach, now enterprise-ready with SOC2 compliance, will gain mobile support under BrowserStack.
“Requestly was born from our own frustration of wasted developer hours due to broken workflows in end-to-end code testing caused by dependency on the environment & backend team” – Jain
The team’s joining a testing giant to accelerate innovation. Congrats!
Read more at BrowserStack’s press release.
OpenAI Buys Windsurf for $3B to Boost AI Coding
OpenAI bought Windsurf, an AI coding platform, for $3B, announced May 6, 2025. Founded by Varun Mohan and Douglas Chen, Windsurf helps over 1M developers with tools like automated code reviews, integrating securely with version control systems. The acquisition lets OpenAI enhance its coding features, competing with tools like GitHub Copilot. The team’s expertise will improve AI-driven coding for enterprises.
Learn more at VentureBeat’s article.
Sentry Acquires Emerge Tools to Enhance Mobile Apps
Sentry acquired Emerge Tools, founded in 2020 by Josh Cohenzadeh and Noah Martin, to supercharge mobile app development. Emerge’s tools, used by Spotify and OpenAI, optimize app size and performance, cutting launch times by 60% for DoorDash. Integrated into Sentry’s crash reporting, the team’s expertise will enhance mobile monitoring for 4M+ developers.
Check it out at Sentry’s blog.
🔦 DevTool of the Week: Statsig
Statsig Banner (Source: LinkedIn)
Hailing from Bellevue, Washington, Statsig has earned our DevTool of the Week spotlight with its game-changing $100M Series C funding round at a $1.1B valuation, led by ICONIQ Growth with Sequoia and Madrona. The team has grown exponentially and we see no signs of them slowing down.
Founded in 2021 by Vijaye Raji, a former Facebook engineering VP, Statsig tackled a critical pain point: product teams bogged down by fragmented tools and slow decisions.
“Four years ago…we started building Statsig because we believed something fundamental was broken in how product teams made decisions,” Raji shared on LinkedIn.
Modern product development is messy; complex features, misaligned teams, and AI-driven personalization demand data over intuition. Statsig’s unified platform delivers A/B testing, feature flags, real-time analytics, and session replays, empowering teams at OpenAI, Microsoft, and Atlassian.
From stealth mode to raising $153M across three rounds, Statsig’s milestones include serving thousands of companies, launching tools like Deltoid to map feature impacts, and earning a GeekWire Award nod.
Deltoid tackles the chaos of scattered data, enabling precise decisions. Raji explains,
“We built Statsig to solve this problem, by providing product teams with a single, integrated platform that lets them move fast, experiment with confidence, and measure impact in real time.”
This funding validates Statsig’s vision of replacing disjointed tools with one interconnected platform. With plans to enhance AI insights, expand integrations, and grow its team under new CRO William da Cunha, Statsig is set to redefine development.
For developers, it’s a ticket to faster, smarter product cycles.
Explore Statsig at statsig.com and follow them on Linkedin.
Great week all of you devtoolers out there!
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