- Fae by Raven Wilder (22 features)
- fae gosfth by Jalen C. (5 features)
- Faikari by Mintcarousel (143 features)
- Fakename by fakename (37 features)
- Fakename2 by fakename (95 features)
- Fakename3 by fakename (142 features)
- Faljuurodh by WhimsicalXellos (15 features)
- Fasime by Charlie (41 features)
- Fayn by Fauxlosophe (132 features)
- Feayran by David Edwards (42 features)
- Felbahn by B. Felix (48 features)
- Femmish by Owen Fish (107 features)
- Fenedic by Michael M. Goessler (39 features)
- FeNeKeRe by Fenmere, the Worm (65 features)
- Ferzhic by Scott Eaton (47 features)
- Feyglish by Becci Cat (17 features)
- FIAL by Jeffrey S. Jones (116 features)
- Fictish by Anonymous (44 features)
- Fila by shumai (112 features)
- Firen by killerbee13 (112 features)
- Firtsusish by Leon E. E. (16 features)
- FKL by decadentmuffin (17 features)
- Flatlang by Nathan_NL (17 features)
- Flloptsin by RedStardust (7 features)
- Frangian Sign by Dillon Hartwig (124 features)
- Franglispan by ol bofosh (60 features)
- Frater by Pham Xuan Thai (118 features)
- Frecisce by Frece (36 features)
- Free Tongue by Rhebeqah (38 features)
- Frenkisch by David Parke (104 features)
- Frimer by Isabelle (57 features)
- Fritheyish by jökull (60 features)
- Fsonkers by Michael Green (78 features)
- funda by jan Walo (19 features)
- Fupoloypan by oGODtheNoise (16 features)
- Future English by Taylor Selseth (141 features)