Not just trading posts but towns or villages. If so where were the settlements, how did the Colonists of the time view them? Did they have any involvement in the war efforts.
Not entirely sure what you mean. Do you mean, were there other European colonies and settlements in what is now the United States beyond England's colonies between 1775 and 1783?
If so, then yes. Close to the fledgling United States, Spain controlled Florida. The city of St. Augustine was founded in 1565 and is older than Jamestown. in the continent beyond, there were Spanish settlements in California, New Mexico, and Texas, not to mention settlements throughout all of what is now Mexico down into South America (where the Portuguese had settlements in Brazil).
France was sort of on the out in North America at the time, having ceded lower Louisiana and New Orleans (founded in 1718) to Spain. (France would regain it in 1803 weeks before selling it and all of Louisiana to the U.S.A.). St. Louis (in what is now Missouri) was founded in 1764.
In addition to the "Thirteen Colonies", Britain laid claim to France's old colonies in Canada, including Quebec City and Montreal, in addition to their own possessions. British-controlled Canada played a... rather hefty... role in the Revolution.
And that's to say nothing of the extensive, and by that time positively old, European colonies throughout the Caribbean.
And the Russians had some colonies in Alaska at the time, including Unalaska in the Aleutians, but there wasn't much if any direct contact between those colonies and the British colonies on the Atlantic seaboard.
If you're asking if there were settlements directly from the 13 colonies that would become the United States beyond their borders at the time. Sort of. The colonies' western borders were a bit more nebulously defined, but American settlers wanting to push west over the Appalachians and into the (French-claimed) Ohio Valley in the mid-1700's was one of the direct causes of the French and Indian War.