Extra Solar Colonization without FTL or FTL commo right
Helm by Steven Gould-- they have STL travel and STL commo, actually they have very little technology. Their technology does include some backstory about the effect of a memory implantation technique on religious war, net enough fanatical followers, make more by implanting your religious beliefs in the minds of your captured enemies.
Mother of Demons by Eric Flint–unless I am mistaken, they have no FTL flight or commo. A small shipwrecked group of humans colonize another planet. They have one small problem they cannot eat anything from the ecosystem but the milk from a specific breed of the local primitive sentient species.
StarChild by James Hogan-- this book features a fascinating way to colonize a world, they send out STL ships with lot’s of redundancy and equipment, but only a rudimentary AI that has a lot of room to go. They also provide recipes, to make…people from scratch but no directions on what to do with them.
the earlier mentioned Legacy of Heorot and it’s sequel Beowulfs Children are rocking good because they look at the consequences of early freeze sleep. Khan Nunian Soong should have been a moron.
If it’s cool for the aliens to colonize us, I would suggest,
The World at War series, by Harry Turtledove–aliens invade earth…in the middle of 1939, that series goes all the way throug 1970’s so far
Footfall by L Niven and J Pournelle–aliens invade…in the early-mid 80’s earth responds, aliens drop rocks.
If you like out of print stuff, try to find
the Assemblers of Infinity by Kevin Anderson and Doug Beason,–Aliens maybee invade, or maybee not, but their nanotech certainly does interesting stuff on the moon.
in Movies, I don’t recall any FTL flight or Commo in Independance Day, they saw the ship decelerate STL, the aliens used low orbit satelittes to coordinate their strike, I think it was all STL
well that’s all from me for now I know lot’s of STL specfic but I’ll just stick to the STL colonizations for now