September 19, 2025

Aprelium is pleased to announce the immediate availabilty of new releases of both editions of Abyss Web Server for Windows, macOS, and Linux.

Abyss Web Server is available in two editions:

• Abyss Web Server X1 version 2.16.20: Free personal edition. It isn't a trial version or a demo. It is a fully usable personal web server with no limitations, no nag screens, no spyware, and no advertisements.
• Abyss Web Server X2 version 2.16.20: Professional edition priced at US $59.95. It is a professional-grade web server which comes with one year of free upgrades and one year of priority technical support.

Users of previous versions are advised to upgrade as soon as possible to this new release.

New Features

The new version is a maintenance release with the following changes:

• Added automatic handling of the maximum number of processed requests for FastCGI interpreters with a special focus on PHP's case;
• Added a default special timeout to better handle reverse-proxying WebSocket back-ends;
• Implemented a policy to mitigate any potential BREACH attack by preventing compressed dynamic content over HTTPS;
• Added support for redirecting HTTP clear-text requests to their HTTPS counterpart when made on a TLS/SSL-enabled port;
• Added support for handling and generating certificates bound to IP addresses and International Domain Names;
• Added case-insensitivity support to user names;
• Fixed issues and added minor improvements to low-level networking routines;
• Updated the internals of the console for better responsiveness;
• Fixed reverse-proxying POST requests served from Web servers that do not correctly handle HTTP/1.0 requests;
• Added mechanisms to mitigate DDoS attacks using reset frames and malformed HTTP/2 requests.

A detailed changelog with long description of the additions and fixes is also available.

Download / Upgrade