Rindler
The IDE for Tokenmaxxers
Founders
- Michael SerranoFounder/CEO
- Arthur De Los SantosFounder/CTO
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
MagnitudeS25Open source inference server for local modelsShared: developer tools, infrastructureActive
HyperDXS22Open-source, dev-friendly observability.Shared: developer tools, infrastructureAcquired
HiroS23Agents that handle security workShared: developer tools, infrastructureActive
KERNELS25Crazy fast, open source infra for AI agents to use the InternetShared: developer tools, infrastructureActive
SublingualW25Daily productivity trackerShared: developer tools, infrastructureInactive
Also from S26 in AI
Batchmates in Summer 2026.
ArchalS26API sandboxes, built for AI agentsActive
hiloopS26Autoresearch as a service: we solve your hardest measurable problemsActive
InkboxS26The identity and communication layer for AI agentsActive
RiftenS26Earned intelligence for every companyActive
Agnost AIS26We find where AI agents fail, then train better models to run them.Active
Alkera AIS26Reliable and safe data engineering and data science agentsActive
About Rindler
We build Maxxwell, a desktop app for people who run several coding agents at once. Past two or three sessions, you become the bottleneck. Every session asks you something, most of it small, and you spend the day answering instead of deciding. It is also hard to tell which sessions are making progress, which are stuck on something trivial, and which have quietly started building the wrong thing. Maxxwell puts every session in one window and marks each one working, idle, or waiting on you. On top of that sits an orchestrator, a real coding-agent session of its own that reads the others and reports back. You talk to it instead of to twelve terminals. It tells you what landed, what it decided for you, and what actually needs your call. Every worker is your own tool, unmodified. Claude Code, Codex and Cursor Agent run in real terminal sessions you can attach to and take over at any point
Boston, MA, USA
Rindler: questions
Which YC batch was Rindler in?
Rindler was in Y Combinator's Summer 2026 batch (S26).
Is Rindler still active?
Y Combinator lists Rindler as active.
Who founded Rindler?
Rindler's founders, as listed on its YC page: Michael Serrano (Founder/CEO), Arthur De Los Santos (Founder/CTO).
Where is Rindler based?
Rindler lists Boston, MA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.