whumpril is a daily 'whump' based prompt fest run through the month of April.
perioddrama_ic is an icon contest community where people will participate in fortnightly icon challenges where participants will use images/screencaps from period dramas (both film and TV).
highadrenalineexchange, a fic/art exchange where you have two weeks to write 10k or draw a 25 panel/10 page comic and one week to edit, is
open for nominations until April 14th, 9:59PM EDT.
femslash_kink, an exchange dedicated to celebrating kink in femslash,
is accepting nominations until April 14th, 11:59PM EDT.
sakuraexchange, a spring exchange for relationships in Japanese media, is
open for sign-ups until April 15th, 11:59PM UTC.
999_whats_your_emergency, a flash exchange for 'Emergency' canons, is
concurrently open for nominations and sign-ups until April 15th, 11:59PM UTC.
prisoner_exchange, a multifandom exchange for fanworks focusing on kidnapping, hostage situations, prisons, and all other types of captivity, is
accepting nominations until April 15th.
fandom5k, a multi-fandom gift exchange for fic with a 5,000-word minimum, is
open for sign-ups until April 16th, 11:59PM EDT.
jukebox_fest, a fic/art/podfic exchange using songs and music videos as the canon, is
open for nominations until April 16th.
spring_renewal, a multi fandom prompt fest, is
open for posting until April 30th.
flowersforgraves is running a
Trans Characters Promptfest. Prompts and fills will be open until May 6th.