Basic Fantasy has some free ish versions of G1-G3 and more

 https://www.youtube.com/watch?v=AOTkbajnv6Q

Keep on borderlands redone.  Giants redone.. etc.  

new names:

• Chaotic Caves  - their version of Keep on the Borderlands. 
• Monkey Isle - ?
• Saga of the Giants - 
• it has 3 more "modules sorta" with stone giant themed, cloud giant themed, and storm giant themed. Cool and all, but I'm sick of giants and we just started G3, so I'm gonna pass. Cool they did this though. 
• it is like 170 or something pages instead of the original 40ish of the first 3 original modules. 
• doesn't tie into the Drow.