– Firefox SSE 91.13 ESR complied from Firefox ESR 91.13 source code (for better performance, enable the webrender.force-disabled option in the about:config tab, and if you have opengl 2.0 capable vga card (Ati 9500 or better, Nvidia Geforce 6 or better) enable the -enabled option (this is not stable all vga/driver combination so test it, usually openscoure Ati/Amd and proprietary Nvidia is Ok), the latter also applies to Seamonkey. – Seamonkey SSE 2.53.15b1 complied from the latest Seamonkey source code

– SSErpent 20230113 complied from Basilisk 20230108 source code – NewMoon SSE 31.4.2 complied from Palemoon 31.4.2 source code I’ve some good news, latest (2.53.15b1) Seamonkey and the 91.13 version of the ESR Firefox (webrtc contains most of the sse2 code, which I was lazy to weed out, so i just disabled it, it’s unlikely that someone would want to use the browser to do video conferencing on such an old machine anyway) now complied successfully under pure Debian 9 (only gcc-7 needed) without sse2 requirement, and now it seems stable on the formerly mentioned sites (, mega.nz ect) too, so now we have 4 different relatively up-to-date browsers to choose from if we only have a sse-capable computer (Pentium3 or Athlon Xp class machines), namely

Free instals uBlock Origin 1.51.0