Who is the voice of Tosafoth?

Question

Tosafoth were the sons-in-law, grandchildren, and students of Rashi (and their students), and "they" wrote a commentary on the Talmud that is often at odds with Rashi's earlier commentary. Sometimes there are internal disagreements within a single commentary on the passage of Talmud being discussed. Who is the redactor of the various opinions expressed in the commentary of Tosafoth?

Answer 1

There is a sefer by Efraim Urbach called "Ba'alei HaTosafot" (in Hebrew) that discusses them and analyzes, Masechta by Masechta, who the anonymous authors might be.

Answer 2

Wikipedia's article "Tosafot", quoting the 1906 Jewish Encyclopedia's:

The edited tosafot owe their existence particularly to Samson of Sens and to the following French tosafists of the thirteenth century: (1) Moses of Évreux, (2) Eliezer of Touques, and (3) Perez ben Elijah of Corbeil.

Answer 3

Usually the Tosfot commentary for a particular masechet was compiled by a particular Tosafist. Based on clues ranging from outright self identification to alignment of particular shitot, rulings, we can identify a large majority of the authors.