Rindler
YC S26 · Active · The IDE for Tokenmaxxers
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 ZenbuShared: coding agent, ideActiveAI, Devtools | AI, Devtools | Active | YCX26 |
 CapyShared: coding agent, ideActiveAI, Devtools | AI, Devtools | Active | YCF24 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 Centauri AIShared: coding agent, session, progressActiveAI, Devtools | AI, Devtools | Active | YCW24 |
 stagewiseShared: coding agent, ide, runActiveAI, Devtools | AI, Devtools | Active | YCS25 |
 SupersetShared: coding agent, ide, desktopActiveAI, Devtools | AI, Devtools | Active | YCX26 |
 .WaveShared: infrastructure, session, runActiveAI, Devtools | AI, Devtools | Active | YCW25 |
 AmikaShared: coding agent, infrastructureActiveAI, Devtools | AI, Devtools | Active | YCF25 |
Also from S26 in AI
All of S26| Company | Category | Status |
|---|---|---|
 ArchalAPI sandboxes, built for AI agentsActiveAI, Devtools | AI, Devtools | Active |
 hiloopAutoresearch as a service: we solve your hardest measurable problemsActiveAI, Devtools | AI, Devtools | Active |
 InkboxThe identity and communication layer for AI agentsActiveAI, Devtools | AI, Devtools | Active |
 RiftenEarned intelligence for every companyActiveAI, Devtools | AI, Devtools | Active |
 Agnost AIWe find where AI agents fail, then train better models to run them.ActiveAI, Data, Devtools | AI, Data, Devtools | Active |
 Alkera AIReliable and safe data engineering and data science agentsActiveAI, Data, Devtools | AI, Data, Devtools | Active |
Founders
- Michael SerranoFounder/CEO
- Arthur De Los SantosFounder/CTO
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
- YC batch
- S26 · Summer 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 2
- Location
- Boston, MA, USA
- Founded
- 2025
- Checked
- 33m ago
YC tags: Artificial Intelligence, Developer Tools, SaaS, Infrastructure
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.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.