Artscroll started the publication of Yerushalmi. You can buy the first volume at their site.

Heshey Zelcer's Guide to Jerusalem Talmud.

1. Yerushalmi Berachos with the Perush of Rabeinu Shlomo Bechor Yosef Sirillo
2. Yerushalmi Shekalim with the Perushim of R' Meshulam and a Student of R' Shmuel Bar Shneur
3. Sadeh Yehoshua al Yerushalmi Zerayim by Rabeinu Yehoshua Benveniste
4. Agados Yerushalmi al Yerushalmi Zerayim with the commentaries Yafeh Mareh by Rabeinu Shmuel Yafeh, the author of Yafeh Toar on Midrash Rabah, and Kevod Chachamim of Rav Shimon MiPintchov
5. Commentary on Yerushalmi Peah by Rabbi Yakov Neumann
6. Mare Aish on Yerushalmi Shekalim, Volume 1 by Rabbi Mordechai Savitsky
7. Mare Aish on Yerushalmi Shekalim, Volume 2 by Rabbi Mordechai Savitsky
8. Mashbiach on Yerushalmi, Volume 1 by Rabbi Moshe Shimon Sivitz
9. Mashbiach on Yerushalmi, Volume 2 by Rabbi Moshe Shimon Sivitz
10. Meshabeyach on Yerushalmi, which is an addition to the Mashbiach, by Rabbi Moshe Shimon Sivitz
11. Kol Yerushalayim - (April 1953) - Journal dedicated to discussion of various topics on Yerushalmi
12. Otzar HaPirushim Al Masechta Horayos - Excerpt from the sefer containing the meforshim on Yerushalmi. For the complete sefer please visit http://www.seforimonline.org
13. Sefer HaRaal uPri Genusar Al Yerushalmi Masechta Bikkurim by Rabbi Avraham Eliezer Alperstein

    We would like to thank Eliezer Alperstein, the great-grandson of the author, for helping us locating this very rare sefer.

    Rabbi Alperstein was born in Kobrin, Horodna. He obtained an extraordinary knowledge of the Talmud Bavli and the Talmud Yerushalmi. He served as a rabbi in Novogorod, Vilna, for several years and, in 1881, came to America and became rabbi of Khal Adath Jeshurun in New York. In 1884, he went to Chicago to take another rabbinic pulpit and, in 1889, to St. Paul. He returned to New York in 1901 and served as spiritual leader of Congregation Mishkon Yisroel. He was one of the founders of the Agudas HaRabbonim of America. Rabbi Alperstein has the distinction of being the first rosh yeshiva of Rabbi Isaac Elchanan Theological Seminary of Yeshiva University. Upon his death, his wife founded in his memory the Beth Abraham Home for the incurably sick in the Bronx which, today, is the Beth Abraham Hospital, part of the Montefiore-Einstein complex.

14. Mekor Baruch on Yerushalmi by the great Rav Baruch HaLevi Epstein, the author of the Torah Temima.
15. Hagahos Yerushalmi by Rav Chaim Elazar Shapira, the Munkatcher Rebbe.
16. Meichal HaMayim, by R' Yechiel Michal Epstein, the author of the Aruch HaShulchan
17. HaShlama LeYerushalmi is a set of commentaries on Talmud Yerushalmi printed as a separate volume of the original Vilna edition of Talmud Yerushalmi. It contains 10 meforshim on Yerushalmi.
    1. Chidushim of R' Eliyahu Pulda
    2. Sadeh Yehoshua by R' Yehoshua Benveniste
    3. Chidushim of R' Moshe Sofer, the author of the Chasam Sofer
    4. Chidushim of R' Meir Simcha of Dvinsk, the author of the Ohr Sameach
    5. Meichal HaMayim by R' Yechiel Michal Epstein, the author of the Aruch HaShulchan
    6. Mekor Baruch by R' Baruch Epstein, the author of the Torah Temima
    7. Kochav MiYakov by R' Yakov Weidenfeld
    8. Tov Yerushalayim by R' Eliyahu Dovid Rabinowitz Teumim, the Aderet.
    9. Chidushim of R' Rafael Gordon
    10. Ruach Zekeinim, a compilation of chidushim from various authors
18. Sefer Lulaos is a listing of mareh mekomos on links between the Talmud Bavli and the Talmud Yerushalmi and on internal links within the Yerushalmi, written by Rav Meir Mairim Shafit, the author fo Sefer Nir on Yerushalmi.
19. Meor Einayim is a an index of Biblical verses in the Yerushalmi, written by R' Menachem Hochstein. It includes a list of halachic differences between Bavli and Yerushalmi, written by the Maharshal (R' Shlomo Luria).
20. Heshey Zelcer's review of 3 commentaries on Yerushalmi - Toldos Yitzchak, Rav Chaim Kanievsky's Peirush and Yedid Nefesh.