Let's collect all updates, so that Jason can update it quickly and all at once. I'll keep the top post updated.
If there is a notable variant (and normally more appropriate for adding it in the collection), it is mentioned in parens.
- True replicator, Dave Greene, 23. Nov 2013
- 2c/7 puffer, Ivan Fomichev, 26. Dec 2013 (one with smaller population, Ivan Fomichev, 27. Dec 2013)
- 2c/7 rake, Ivan Fomichev, 23. May 2014 (variant with shorter period, Ivan Fomichev, 27. May 2014)
- (6,3)c/P knightship for all sufficiently large P, Adam P. Goucher with Chris Cain, Ivan Fomichev and Dave Greene, 13. Jul 2014 (much smaller one, Chris Cain with Ivan Fomichev and Dave Greene, 18. Jul 2014)
- 31c/240 spaceship (puffers and rakes are trivial), Dave Greene with many contributors, 4. Sep 2014 (much smaller one, Chris Cain based on the previous one, on the same day)
- c/3 gun, Martin Grant and Michael Simkin, 6. Dec 2014 (a smaller variant by Dave Greene, 22. Dec 2014)
- (23,5)c/79 knightship, Brett Berger with Ivan Fomichev, 28. Dec 2014
- (6,3)/245912 gun, parallel HBK gun, Chris Cain, 4. Jan 2015
- Collection of best glider guns
- Honey thieves, p17 oscillator, Matthias Merzenich, 11. Sep 2014
- Rubegoldbergian sawtooth, 60P5H2V0-based sawtooth, Dongook Lee, 29. Sep. 2014
- Switch engine ping-pong, 23-cell quadratic growth pattern, Michael Simkin, 30. Oct 2014
- Pufferfish, natural (!) c/2 puffer, Richard Schank, 24. Nov 2014; related p36 puffer, spaceship and rake, Ivan Fomichev, 27. Dec 2014; smaller rake, 'glider_rider', 29. Dec 2014; breeder, Ivan Fomichev, 8. Jan 2015
- Crab gun, Martin Grant, 30. Dec 2014 (a smaller variant is likely to follow)
- Sawtooth 246, Dave Greene, 30. Jan 2015 (optimised version of sawtooth 260)
Matthias' nominations: Your nominations are welcome.