Makers of @zero__ms and @replicache. Pronounced like the horse.

Joined March 2020
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13 Mar 2024
Sync engines.
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Rocicorp retweeted
20 Dec 2025
Rocicorp's year in music 1. How It's Done - Huntrix x.com/aboodman/status/198362…

29 Oct 2025
Sync engines enable instantly responsive UI. But the tradeoff is usually slow startup because all data must be pre-loaded. Zero's query-driven sync enables precise control over when data syncs. To demonstrate, we scaled our "zbugs" demo up to 2.5M rows. Introducing Gigabugs:
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Rocicorp retweeted
How does @rocicorp keep Zero fast? 🐰 Bencher: bencher.dev/perf/zero
10 Feb 2025
What's the big deal about Zero? Partial sync Come learn all about the new sync engine from @aboodman and @rocicorp
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Rocicorp retweeted
18 Dec 2024
The most annoying problem for Zero's launch was what bug tracker to use. GitHub is way too slow, and Linear doesn't have public bugs or permissions – both required for OSS projects. This was driving me nuts, until I realized the only possible solution… ⏩ (link in reply)
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13 Sep 2024
Dev is hired
Replying to @jetpackjoe_ @thdxr
the cost is soon gonna be zero
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10 Sep 2024
General purpose sync for the whole web.
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Rocicorp retweeted
28 May 2024
Beyond excited to share that Matt Wonlaw (aka @tantaman) has joined @rocicorp as our seventh partner. Matt is well-known in the local-first community for his work on vlcn.io and related projects, and I'm delighted he has chosen to join forces with us. We've all been working together now for several months, and I cannot wait to share the results. Let's just say that they will be _materializing_ very soon.
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14 Feb 2024
When processes evolve separately from each other, their state diverges. That's why we're kicking off a newsletter. Issue 001 of "The Sync" covers the last six months of changes to @replicache and @hello_reflect. Check it out at rocicorp.dev/blog/the-sync-0….
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We've added a new partner to @rocicorp! I've known Darick Tong for about fifteen years – he was one of the principal engineers behind the Gmail backend, and widely respected at Google. More importantly he's the person behind the 💩 emoji. fastcompany.com/3037803/the-…
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Rocicorp retweeted
24 Mar 2023
I am extremely delighted to share that @alexkingsays is joining @rocicorp to lead design. My entire career, I have loved collaborating with great designers. There is just something about a tight feedback loop between ux creativity and engineering creativity that often makes magic happen. Alex has been heroically helping us in nights, weekends, and other miscellaneous scraps of time for the last year. And even with only a tiny fraction of his attention, the results have been *amazing*. Collaborating on replicache.dev/ has been some of the most fun I've had in years. I could not imagine a better design partner for our company, and cannot wait to share what we have in store next.
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Rocicorp retweeted
15 Jun 2022
Replying to @maccaw @rocicorp
But I guess with the caveat that this is still a work in progress, here's the comp explainer we share with candidates at Rocicorp that explains how our company works: replicache.notion.site/Rocic…
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Rocicorp retweeted
10 May 2022
Today, @replicache is entering General Availability! This means Replicache is now ready for use in production, and caps two years of iteration with customers like @vercel, @monday, @placemark, and @assetbots. For more, check the new Replicache website: replicache.dev

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15 Nov 2020
Here's something fun for a quiet Saturday night: 👊🏽 github.com/rocicorp/fraction… 🤙🏾 github.com/rocicorp/fracdex Standalone JS and Go impls of Fractional Indexing, as recently popularized by @figmadesign and described at observablehq.com/@dgreensp/i….
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