thttpd review
A free, focused HTTP server for operators who need low-resource serving.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
thttpd is a small, portable HTTP server from ACME Laboratories for operators managing Unix-like systems. It supports FreeBSD, SunOS, Solaris, BSD/OS, Linux, and OSF, and can be compiled and installed on a server managed by the operator. Its focus is basic HTTP serving rather than a broad application platform, making it a fit for low-resource deployments that need core web-server functions without a paid plan.
The published product details show a free distribution with HTTP/1.1 serving and CGI 1.1 support. Operators can configure URL-based traffic throttling, IPv6, virtual hosting, multihoming, custom HTTP error pages, and logging through syslog or files. Basic authentication uses .htpasswd files, while chroot-based filesystem isolation adds an available isolation mechanism. This feature set gives thttpd useful coverage for straightforward websites and CGI-based services, particularly where resource use and a narrow server role matter more than a large ecosystem.
Its limitations define the choice. HTTP/2 is not supported, and Windows is not among the supported platforms, so deployments requiring either should choose another web server. The documentation is dated, which may increase the effort required to interpret configuration and installation guidance. thttpd is therefore suited to operators who want a free, compact HTTP/1.1 server with throttling, CGI, IPv6, authentication, and logging on supported Unix-like systems. It is a weaker fit for modern protocol requirements, Windows environments, or projects seeking a broader platform with current documentation and newer web capabilities.
thttpd pros and cons
- Where it wins
- Free software with HTTP/1.1 and CGI 1.1 support
- Includes throttling, IPv6, virtual hosting, and multihoming
- Offers chroot isolation, authentication, custom errors, and logging
- Where it doesn't
- Does not support HTTP/2
- Does not support Windows
- Documentation is dated
thttpd fact sheet, pricing and score →
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