System requirements:

• 2.4 GHz CPU or faster (multi-core recommended).
• Windows XP, Vista, 7, 8 or 10.
• Graphics card with Pixel Shader model 2.0 support.

Required software:

• Microsoft .Net Framework 3.5 (http://www.microsoft.com/download/en/details.aspx?id=25150).
• DirectX 9.0 Runtime (https://www.microsoft.com/en-us/download/details.aspx?id=35&44F86079-8679-400C-BFF2-9CA5F2BCBDFC=1).

Links:

• Official thread at ZDoom.org
• Unofficial thread at iddqd.ru (in russian)
• Git builds at DRDTeam.org

More detailed info can be found in the editor documentation (Refmanual.chm).