The CyaSSL embedded SSL library is a lightweight SSL library written in ANSI C and targeted for embedded and RTOS environments, primarily because of its small size, speed, and feature set. It is commonly used in standard operating environments and cloud services as well because of its royalty-free pricing and excellent cross platform support. CyaSSL supports industry standards up to the current TLS 1.2 and DTLS 1.2 levels, is up to 20 times smaller than OpenSSL, and offers progressive ciphers such as HC-128, RABBIT, and NTRU.
lighttpd is a secure, fast, compliant, and very flexible Web server which has been optimized for high-performance environments. It has a very low memory footprint compared to other Web servers, and it takes care of CPU load. It has an advanced feature set that includes FastCGI (load balanced), CGI, Auth, Output-Compression, URL-Rewriting, SSL, and much more.
LeanWeb is a tool for removing user-defined parts from Web pages. It works as a HTTP proxy, as such can be combined with other proxies, and runs on the same platforms as Junkbuster (i.e. Unix and Win32). LeanWeb is mainly intended for users of handheld devices who want to view Web pages without having to scroll through all the unnecessary clutter present on modern Web pages, but can also be used to customize frequently visited Web pages.
Monkey HTTP Daemon is a very fast and lightweight Web server for Linux. It uses a hybrid networking model based on asynchronous calls (event-driven) and fixed threads, which makes it scalable and capable of attending thousands of clients per second. It provides a powerful API for C and is ideal for embedded devices, thanks to its small core and plugin architecture.
Mohawk is the next-generation, evolutionary leap from TkApache. It is a full-blown front-end GUI for the Apache Web server for configuration, tuning, performance monitoring, and more. Completely re- written in C, using GTK+/GNOME rather than Perl/Tk, Mohawk aims to be faster and more robust than TkApache.