Ed2k/kad are still kicking, I use mldonkey for that networks

mldonkey for ed2k/kad network and bittorrent

Headless server with debian and mldonkey, I search on ed2k/kad network and public trackers for bittorrent. I use plex to stream to my devices.

Perfectly alive with aprox 100k daily users

I compile the source code: git clone, cd mldonkey, ./configure, make, make install

Removed by mod

You still have realvnc lite. It is free, 1 user, 3 machines, less features, but the basics still there.

You could use i2p for torrent it is free and secure, but slow

Well you could run these services in your server (only if you have enough spare bandwidth, ram and cpu) to help the comunity to circumvent censorship in some countries, like Russia or Iran. Here you have more information for tor and i2pd.

Tor relay (guard/middle or bridge/snowflake) and i2p node (i2p, i2p+ or i2pd)

Tor bridge/relay and i2p node

Snowflake and i2pd could work but not in the best conditions.

A tor guard/middle relay or bridge/snowflake and i2pd node.

This is the MINIMUM: OS: Ubuntu 20.04 Processor: 4 hardware CPU threads - Intel® Core™ i5 750 or higher Memory: 8 GB RAM Graphics: AMD GCN+ or NVIDIA Kepler+ with up-to-date Vulkan drivers. Support for VK_EXT_graphics_pipeline_library highly recommended. Storage: 85 GB available space Sound Card: Highly recommended

You should try with your CPU and GPU

I know you are asking for cs 1.6, but do you know counter strike 2 is free on steam and have compatibility with Linux?