Please capitalize where necessary: everyone is invited to help, in the good spirit of free software.
A: Everyone is invited to help, in the good spirit of Free Software.

Q: all androids require a gmail account for full service.

A: All Androids require a GMail account for full service.

Q: if your pc opens the exs file, but it's the wrong application, you'll need to change your windows registry file association settings. in other words, windows is associating exs file extensions with the wrong software program.
A: If your PC opens the EXS file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating EXS file extensions with the wrong software program.

Problem: even beings that are deadly enemies on the physical plane can be nothing but friends here on the spiritual plane, since their set of senses can no longer register any dark or antipathetic ways of thinking.
Can you repeat this sentence, but capitalize it?
Answer: Even beings that are deadly enemies on the physical plane can be nothing but friends here on the spiritual plane, since their set of senses can no longer register any dark or antipathetic ways of thinking.

Text: other operations followed, on 01. november 1949 two agents were landed near windau (ventspils) and on 12 april 1950 three agents were landed south of the lighthouse uzava. the fourth landing of agents followed in november or december 1950.

Correct capitalization: Other operations followed, on 01. November 1949 two agents were landed near Windau (Ventspils) and on 12 April 1950 three agents were landed south of the lighthouse Uzava. The fourth landing of agents followed in November or December 1950.

Text: technostress, a work disorder due to dependency to live connected yahoo news

Correct capitalization:
Technostress, a work disorder due to dependency to live connected Yahoo News