I am looking for more information on the Savoraim such as a list of who they were, what they wrote outside of comments/amendments in the talmud, meaning do they have responsa, ethical or halachik works?
Any works that deal in detail with the development of the Talmud (e.g. Seder HaKabalah of the Raavad, the Igeres R' Sherira Gaon) will discuss the Savoraim. The Doros HaRishonim discusses them at some length in volume six.
The Savoraim was a very brief and obscure period. Different sources give significantly different information on the period. The Seder HaKabalah of the Raavad writes that the period lasted five generations (over a period of 187 years) and he identifies the following figures as the leaders of each generation:
- Rabbah Yosi
- Rav Achai bar Huna, Rav Shmuel bar Rava, Ravina of Umtza, R' Techina, Rav Simona and Rav Ina.
- Rav Chanan of Ashikiah, Rav Mari, Rav Huna, Rav Chanina, and Rav Chinena.
- Rav Yitzchak.
- Mar Rava, Mar Huna, Rav Sheshna (also called Rav Mesharshia bar Tachlifa), and Rav Bussai.
However, as mentioned above, other sources differ with this account in a variety of ways.
To my knowledge, other than their role in the final compilation and editing of the Talmud, there are no distinct works attributed to Sages from this brief period.
In the sefer סדר הדורות הקצר (pp.118-119) it states that the Savoraim were based in Bavel after the period of the Amoraim and they gave over reasoning and 'svaros', logical deductions about the words of the Tannaim and Amoraim (hence their name).
It notes that we don't have many names, but the following are included in the grouping. (For more information about each person see the picture of the pages below):
- Rav Huna Mari son of Mar Zutra
- Rav Yosef
- Rav Sama
- Rav Achai
- Rabbah Rachumi
- Rav Shmuel son of Rav Avahu
- Ravina M'Imatzia
- Rav Huna
- Rav Achai son of Rabbah son of Avahu
- Rav Acha
- Rav Techina, Mar Zutra and Rav Chana (sons of Rav Chanina)
- Rav Simona
- Rav Eina
- Rav Rabai Daman Rov
From Rabbi Yosef Eisen's Miraculous Journey (pg 12)
During their time, the so-called minor tractates of the Talmud were completed, including Maseches Soferim and Maseches Semachos. In all, Rabanan Savorai's total additions to the Babylonian Talmud comprise less than 2 percent of the text.
(he cites Paretsky, Reservoirs of Faith p. 99 and HaLevi, Doros HaRishonim Vol. 6, p.21)
For more scholarly and thorough information you should see Bacher's entry in the JE, Dr. Lewin's 'Rabbana Svorai VeTalmudam', Julius Kaplan's 'The Redaction of the Babylonian Talmud' (p. 309) and then see David Weiss Halivni 'The Formation of the Babylonian Talmud' (pg. 6)
(Can't provide web links for the last two)
See Rabbi Hersh Goldwurm's From Yavneh to Pumbedisa for an easily accessible English history of that period.