Some festivals are important presenters and promoters of Intermedia arts, although they are less active as co-producers. Apart from interdisciplinary festivals like Break Festival (which in 2005 was dedicated to Bio-art) or the City of Women International Festival of Contemporary Arts in Ljubljana, Slovenia has three specialised Intermedia arts festivals.

The first of these, the annual International Festival of Computer Arts (IFCA), was organised by MKC Maribor Youth Culture Centre in 1995. Now also co-produced by ArtNetLab, this is the longest-running computer arts festival in the country and takes place in Maribor and recently also in Ljubljana and Graz, Austria.

At the very beginning the guests were young artists and well-known guests such as Stelarc with the performance Split Body/Voltage-in/Voltage-out, Lisa Brandt with the performance Techno Hell, Jacek Szleszynski with computer animations, Petra de Njis with the computer animation project Guru Meditation, and Paul Sermont with the installation Telematic Dreaming. Subsequent guests have included Chico MacMurtrie with an installation and performance, Allucquere, Rosanne (Sandy) Stone, Olia Lianina with the installation network projects, Rachel Armstrong, Arthur Elsenaar, Stahl Stenslie, Marcel-Li Antunez Roca, David Link, Constanze Ruhm, Orhan Kipcak and Markus Huemer. The Pixxelpoint International Festival of Computer Art was launched five years later in Nova Gorica. By presenting digital art works from around the world, this annual festival aims to ensure that computer art makes the transition from virtual to real space. The youngest of the three festivals is the HAIP Festival, a biennial ‘multimedia festival of open technologies’ organised by Cyberpipe in Ljubljana (2004, 2006). It presents works of the young, promising artists and creative engineers from Slovenia and many other European and even Asian countries, who specialise in top-notch, open standard-supported arts and multimedia practices. The 2006 HAIP programme was impressive, featuring Rama Costentino and Platoniq: Burnstation (Spain), Time’s Up (Austria), FunkFeuer: Free Net Ljubljana (Austria), Monochrom (Austria), Metafor (Switzerland), Gabriel Finch Salsaman: LiVES (UK), Rodrigo Derteano (Peru), Kentaro Fukuchi (Japan), Frank Barknecht and Daniel Fischer (Germany), Shaina Anand (India), Bob Milošević (Serbia), Stefan Doepner (Germany/Slovenia) and Borut Savski, Luka Prinčič, Slavko Glamočanin, Boštjan Špetić, Mould and Err0r (Slovenia).

In 2002 KIBLA Multimedia Centre in collaboration with the Linux Users Group of Slovenia Association (LUGOS, established 1997) launched the international open code KIBLIX Linux IT Festival. Over the years Ljudmila - Ljubljana Digital Media Lab, KIBLA Multimedia Centre and Cyberpipe have made a significant contribution to the popularisation of open-source and free software in Slovenia. In 2003 Ljudmila developed and published SLIX 1.0, a Slovene Live GNU/Linux CDR on open code programme.