The following is a list of Mozilla Foundation / Mozilla Corp. products. All products, unless specified, are cross-platform by design. Client applications Firefox Browser - An open-source web browser. Firefox Focus - A privacy-focused mobile web browser. Firefox Reality - A web browser optimized for virtual reality. Firefox for Android (also Firefox Daylight) - A web browser for mobile phones and smaller non-PC devices. Firefox Monitor - An online service for alerting the user when their email addresses and passwords have been leaked in data breaches. Mozilla Thunderbird - An email and news client. Mozilla VPN - A virtual private network client. SeaMonkey (formerly Mozilla Application Suite) - An Internet suite. ChatZilla - The IRC component, also available as a Firefox extension. Mozilla Calendar - Originally planned to be a calendar component for the suite; became the base of Mozilla Sunbird. Mozilla Composer - The HTML editor component. Mozilla Mail & Newsgroups - The email and news component. Components DOM Inspector - An inspector for DOM. Gecko - The layout engine. Necko - The network library. Rhino - The JavaScript engine written in Java programming language. Servo - A layout engine. SpiderMonkey - The JavaScript engine written in C programming language. Venkman - A JavaScript debugger. Development tools Bugzilla - A bugtracker. Rust (programming language) Skywriter - An extensible and interoperable web-based framework for code editing. Treeherder - A detective tool that allows developers to manage software builds and to correlate build failures on various platforms and configurations with particular code changes (Predecessors: TBPL and Tinderbox). API/Libraries Netscape Portable Runtime (NSPR) - A platform abstraction layer that makes operating systems appear the same. Network Security Services (NSS) - A set of libraries designed to support cross-platform development of security-enabled client and server applications. Network Security Services for Java (JSS) - A Java interface to NSS. Personal Security Manager (PSM) - A set of libraries that performs cryptographic operations on behalf of a client application. Other tools Client Customization Kit (CCK) - A set of tools that helps distributors customize and distribute the client. Mozbot - An IRC bot written in Perl. Mozilla Directory SDK - For writing applications which access, manage, and update the information stored in an LDAP directory. Mozilla Raindrop - Was an upcoming technology for sending messages. Mstone - A multi-protocol stress and performance measurement tool. Thimble - Mozilla's web-based educational code editor, part of the company's