TL;DR: If you are replacing Tsumobi, the closest options are Fractal Labs, BrainTripping, FanHero. The table below compares 12 alternatives on what they do, stage, size and status.
Every alternative below is compared on what it actually does, not just its category — so you can see which one genuinely replaces Tsumobi (YC Winter 2007).
Last verified:
The three closest alternatives to Tsumobi are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Fractal Labs | — | YC Winter 2024 | 4 | Active |
| BrainTripping | — | YC Summer 2012 | 1 | Inactive |
| FanHero | — | YC Summer 2013 | 1 | Inactive |
| Simmery | — | YC Summer 2005 | — | Inactive |
| Mixed Media Labs | — | YC Winter 2010 | — | Inactive |
| Grid | — | YC Summer 2012 | — | Inactive |
| Meetyu | — | YC Summer 2007 | — | Inactive |
| Talkito | — | YC Summer 2006 | — | Inactive |
| Vote.org | — | YC Summer 2016 | — | Active |
| Zip Phone | Whatsapp for voice | YC Summer 2014 | 1 | Acquired |
| MessageParty | Local chat. | YC Summer 2010 | 1 | Inactive |
| Biographicon | — | YC Summer 2007 | 2 | Inactive |
It depends on your size. Fractal Labs is the closest match on what Tsumobi actually does. If you need something more established, sort the table by team size — larger teams generally mean more support and a longer track record. If budget is the constraint, the earlier-batch companies are usually the ones still competing on price.
Tsumobi is no longer listed as active, so anyone still relying on it should plan a migration to one of the alternatives above.
Every company here is Y Combinator-backed and was matched to Tsumobi on what it actually does — its own description of its product — rather than on a broad category label. Batch, team size and operating status come from the YC directory and are shown as-is. We do not rank by payment.
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