Sandcat Browser 5 brings unique features that are useful for pen-testers and web developers. Sandcat is built on top of Chromium and uses the Lua programming language to provide extensions and scripting support.Discontinued
Latest release Nov 16, 2018
QtWeb Internet Browser - lightweight, secure and portable browser having unique user interface and privacy features. QtWeb is an open source project based on Nokia's Qt framework and Apple's WebKit rendering engine (the same as being used in Apple Safari and Google...Discontinued
Last version was released 2 years ago (9th September 2013) , last source code change was 2 years ago (9th October 2013)
Lucid Browser is a free and open source browser designed to be small, light, fast, and simple. The app itself is as small as 1 MB. The browser uses a custom homepage that loads locally for quick start-ups. It is easy to use and very handy.
Comodo IceDragon is a fast and secure internet browser based on Mozilla Firefox and infused with Comodo security.Discontinued
The latest version of Comodo IceDragon is from a year ago, which is too much for a web browser due to newly discovered vulnerabilities.
The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road.
From download page: "The Zimbra Desktop is no longer supported. It will reach the end of Technical Guidance October 1, 2019.".See https://www.zimbra.com/downloads/zimbra-desktop/
Rekonq is a web browser for KDE based on WebKit. It first focuses on being a light, fast & clean way to access to net. Its development is doubly based on using the new amazing features offered by the WebKit rendering engine and on the rock solid network KDE technologies.Discontinued
The project seems to be no longer maintained. Last version, 2.4.2, released in January 2014, can be still downloaded from SourceForge.
Naked Browser uses the Android WebView (WebKit) that's on your device--the same one used by the stock Browser. The developer has scoured the stock Browser code removing bloat, creating a lightweight, lightning-fast alternative.