# TWiki System Requirements _Server and client requirements for TWiki 01-Feb-2003_ Low client and server requirements are core features that keep TWiki widely deployable, particularly across a range of browser platforms and versions. ## Server Requirements TWiki is written in Perl 5, uses a number of shell commands, and requires [RCS (Revision Control System)](http://www.gnu.org/software/rcs/rcs.html), a GNU Free Software package. TWiki is developed in a basic Linux/Apache environment. It also works with Microsoft Windows, and should have no problem on any other platform that meets the requirements.
Resource Required Server Environment *
Perl 5.005_03 or higher (5.6.1 recommended, 5.8.0 not recommended yet, see TWiki:Codev.IssuesWithPerl5dot8)
Non-standard Perl modules %BULLET% Unix: Net::SMTP (or sendmail) %BB% Windows: Net::SMTP, MIME::Base64, Digest::SHA1
RCS 5.7 or higher (including GNU diff) %BR% Optional, but the all-Perl RCS replacement is not currently recommended for live sites - see TWiki:Codev.RcsLite
GNU diff GNU diff 2.7 or higher is required when not using the all-Perl RcsLite. %BR% Install on PATH if not included with RCS (check version with diff -v) %BR% Must be the version used by RCS, to avoid problems with binary attachments - RCS may have hard-coded path to diff
Other external programs fgrep, egrep
Cron/scheduler %BULLET% Unix: cron %BB% Windows: cron equivalents
Web server Apache 1.3 is well supported; Apache 2.0 is not recommended yet (see TWiki:Codev.IssuesWithApache2dot0). %BR% For other servers, CGI support, authentication, extended path info required; also, the register script is likely to need significant changes
%X% **\*** _Current documentation mainly covers Linux and Apache installations. See [[WindowsInstallCookbook]] for a Windows installation guide. See TWiki:Codev.TWikiOn for help with installation on various platforms including Unix, MacOS X, Apache `mod_perl`, web hosts, etc._ ## Client Requirements The TWiki [[standard installation|Main/TWikiInstallationGuide]] has extremely low browser requirements: - HTML 3.2 compliant - generates XHTML 1.0 pages that are compatible with HTML 3.2 - minimal use of JavaScript in the user interface (degrades gracefully) - no cookies - no CSS You can easily add functionality, by customizing [[TWikiTemplates]], for one, while tailoring the browser requirements to your situation. ## Known Issues - The [[TWikiPlugins]] feature currently does not have compatibility guidelines for developers. Plugins can require just about anything - browser-specific functions, stylesheets (CSS), Java applets, cookies, specific Perl modules,... - check the individual Plugin specs. - %H% Plugins included in the TWiki distribution do not add requirements. -- TWiki:Main.MikeMannix - 12 Jan 2002 %BR% -- TWiki:Main.PeterThoeny - 16 Dec 2003