Places the newsfeed on the left side of the page like it was before so your repositories are shown on the right.
This add-on only swaps the two elements so it looks like the way it did before.

Github Columns Layout Add-on
Github home's old columns layout is a Firefox add-on that swaps the newsfeed and repositories, restoring the classic layout of Github's home page.
Add-on stats
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
Add-on safety
Risk impact
Github home's old columns layout requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Request access to the following domains: github.com
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Github home's old columns layout is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Upgrade to see full risk analysis details
Similar add-ons
Here are some Firefox add-ons that are similar to Github home's old columns layout:

Firefox user 13687471
-

Siriusmart
12

Sreenivasan Ramesh
12

SamJakob
10

Aashutosh Rathi
2

fwcd
1

Dean Attali
57

Mario
1

omnidev0
24