K-Lite Codec Pack
All necessary codecs in one pack for conquering multimedia playback challenges.
Free
By: Codec Guide
Pros
- Free and easy to install
- Includes a variety of codecs
- Plays almost any media
- Avoids bloatware
- Reliable since 2003
Cons
- Might conflict with codecs
- Not always needed for modern Windows
- Confusing for some users
- May offer adware during installation