TL;DR: If you are replacing Letter, the closest options are Tally, Prospa, Pesto. 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 Letter (YC Summer 2020).
Last verified:
The three closest alternatives to Letter are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Tally | — | YC Winter 2025 | 2 | Active |
| Prospa | Banking for businesses | YC Winter 2021 | 70 | Active |
| Pesto | — | YC Winter 2021 | 8 | Active |
| Increase | API-first banking for ambitious technology companies. | YC Summer 2020 | 15 | Active |
| Parker | Parker is a digital bank. | YC Winter 2019 | 10 | Inactive |
| Satchel | — | YC Summer 2018 | 8 | Inactive |
| Nexu | Financing platform for LatAm car dealerships. | YC Winter 2020 | 63 | Active |
| Proof Trading | Institutional equities broker-dealer | YC Summer 2019 | 7 | Active |
| Mono | Plaid for Africa, but better. | YC Winter 2021 | 10 | Acquired |
| Y Combinator | Make something people want. | YC Unspecified | 100 | Active |
| Angle Health | Health Insurance for Startups | YC Winter 2020 | 100 | Active |
| Freya | Voice AI for Enterprises | YC Summer 2025 | 14 | Active |
It depends on your size. Tally is the closest match on what Letter 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.
Letter 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 Letter 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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