CrypToolProject/CrypTool-2
Official CrypTool 2 (CT2) repository. CT2 is an open-source software for learning about cryptography and cryptanalysis interactively. CT2 provides a comprehensive suite of tools to deeply explore algorithms and protocols, making it perfect for both academic study and personal exploration. It also includes features for analyzing historical ciphers.
Star count as of 02:32 (BKK).
CrypToolProject/CrypTool-2 has 169 stars and gained +1 of them in the today, a 0.6% change. It is written in C#, grouped under security, released under Apache-2.0. Last pushed on 6 Oct 2026.
Star history
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Growth
| Period | Stars gained | Growth | From | Measured |
|---|---|---|---|---|
| Last 6 hours | — | — | — | Not measured |
| Last 12 hours | — | — | — | Not measured |
| Today | +1 | 0.6% | 168 on 26 Oct 2026 | Daily snapshots |
| Last 7 days | — | — | — | Last measured 25 Oct 2026 |
| Last 30 days | — | — | — | Not measured |
| Last year | — | — | — | Not measured |
A period with no current measurement is left blank: a delta needs a measurement at both ends of the period. The 6- and 12-hour periods need two intraday measurements exactly that far apart, the day-and-longer periods need snapshots on both dates, and the last year also needs star history from a year ago, which we keep for one year.
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