s2.dev
New accelerator entry · 2025-09-29 · the record
In their words
S2 is an API for durable streams. We make working with streaming data dead simple and reliable. The more we worked on data systems, the more we felt like there was a missing building block. The seamless experience of object storage simply did not exist for durable streams – so we set out to fix that! S2 reimagines streams as an unlimited and access-controlled web resource. Like if Kafka and S3 had a baby. - Building agents? Use granular streams to persist context in real time, make workflows auditable, and coordinate between agents. - Publishing fast-moving data? Streams support high fanout and can be accessed directly over the internet, so they are a great fit for broadcasting real-time feeds. - Sandboxing? Emit to per-instance streams, and read history or live events just as easily. - Local-first and multiplayer experiences? Propagate updates reliably and efficiently. Stop dealing with clusters, and start streaming.
What the record says
- One of 98 companies held here in B2B › Infrastructure.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
The full profile
Source Check, INVEST, RECRUIT and Press Requests on s2.dev
- Source Check — verify what s2.dev states, against the registers that hold it.
- INVEST — size up this company on the figures its record states.
- RECRUIT — see who is already on the team.
- Press Requests — connect with s2.dev for a story.
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist s2.devYou get an alert in MentionFox the next time this company shows up.
Is this you?
If you're behind s2.dev: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. FoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.
Sourced from the company's Y Combinator directory entry.