CAISSA SOFTWARE LIBRARY

Chess tools, clearly released.

Open the free browser converter and follow the certification status of CAISSA desktop applications without confusing plans with releases.

Release status you can verifyChecksums and security reports appear only after the exact artifact is certified.

AVAILABLE NOW

Use a CAISSA tool

No account, activation, or subscription is required for these tools.

AvailableBrowser · Windows · macOS · Linux

CAISSA Polyglot Online

Stream a PGN into a dedicated browser worker and create a standard Polyglot BIN book locally, with progress and cancellation.

  • PGN stays on your device
  • Tested online limit: 25 MiB
  • Canonical 16-byte Polyglot records
Open online converterRead the guide
AvailableWindows x64 · Portable ZIP

CAISSA Book Creator Portable

Version 0.3.1 is a free, offline, open-source PGN-to-Polyglot book creator. The complete corresponding source is published with the Windows package.

Version
0.3.1
File size
43,921,437 bytes (41.9 MiB)
SHA-256
b227fa1a0dd272d80d6da3c13733f2aa2d4d64bd14d02aec3dac3008e444e63b
Security
Unsigned release · source, checksums, notices and SBOM published

This first release is not Authenticode- or Ed25519-signed, so About & Verify correctly reports UNVERIFIED. Check the SHA-256 before use; a matching checksum is not proof that software is malware-free.

Download for Windows Release and source SHA-256 checksums

ROADMAP

Future CAISSA applications

These products are planned. No download or release date is being advertised.

Future application

CAISSA Chess Scanner

A future desktop workflow for turning board images into reviewable chess positions.

Not released · no download available
Future application

CAISSA PGN Reader

A future portable reading and study application for local PGN collections.

Not released · no download available

FAQ

Download and verification questions

Are CAISSA downloads free?

The tools listed as available here are free to use. This page does not include payments, subscriptions or activation requirements.

How do I verify the portable download?

Compare the ZIP SHA-256 with the value on this page or SHA256SUMS.txt on the CAISSA GitHub release. The executable is currently unsigned, and a checksum match verifies bytes rather than malware safety.

Does the online converter upload my PGN?

No. Normal conversion streams the file to a dedicated worker in your browser and does not call the legacy server build endpoint.