ModularSynth sites

Modularsynth is presented in other social networks.
ModularSynth VK page
ModularSynth LJ community

Blogs

ЗInternational blogs
Matrix Synth
DIN Sync
Synthvibrations
Patch Pierre

Russian websites and boards

Russian websites abou electronic music
Theremin Center
KLEM.ru
Инженерные музыканты

Webstores

Most known webstores offering electronic instruments and modules.
Analogue Haven
Schneidersladen
Musikhaus Thomann

DIY-sites

Many engineers like Ken Stone or Ray Wilson, sharing their DIY-projects and provide PCBs and kits. Also there is whole companies like Elby Designs or PAiA, selling DIY-kits since `70s. Many of these modules are inexpensive and as good as commercial ones.
Music From Outer Space
CGS – Ken Stone’s Modular Synthesizer
Birth of a Synth
Synthesizer DIY pages
Experimentalists Anonymous SIY Archives
Dintree — Synth DIY
Synths’r’us (René Schmitz) (about)
Neil Johnson’s DIY page
PAiA
Electric Druid
Gijs Gieskes (about)
HexInverter.com

Russian manufacturers

Few Russian analogue equipment manufacturers.
Musical Artel of Russian Synthesizer developers (Rus.)
Deftaudio
Long
Motovilo
Eternal Engine
Svarog Audio

DIY-manufacturers

Individuals making custom equipment
Vtol (Dmitry Morozov)
Uoki-Toki (Pavel Shiyan)