- Aaey by B. Felix (0 features)
- Aalt by Aozearae (14 features)
- Aaro by Zeke Fordsmender (120 features)
- Aats'ax by Nate Penner (120 features)
- Abaru Human Proto-Language by Manofzelego, Sithril (48 features)
- Abasut by Becca (101 features)
- ABCL by Aydın Baykara (142 features)
- Abraeni by Sectori (117 features)
- A'Broe by Colz (0 features)
- Achiyitqan by irrhythmic (128 features)
- Adejori by Andrew Nelson (135 features)
- Adeyan by Faiuwle (99 features)
- Adinjo by Xaron Alpua (81 features)
- Afri by colz (25 features)
- Afrihili by K. A. Kumi Attobrah (1 feature)
- Agalatian by morganicfoods (63 features)
- Agyiyi by alligangsta (36 features)
- Aingeljã by Ángel Serrano (70 features)
- Ainish by thepurplemango (3 features)
- Ainure by Far (34 features)
- Aixosixomi by Alexander M. Koch (30 features)
- Akat by Rik Roots (27 features)
- Akiel by Daniel Adler (24 features)
- Akxera by rd00dr (143 features)
- Aky by Ben Felix (0 features)
- Alahithian by ol bofosh (113 features)
- Alakulian by Artaxes (118 features)
- Alál by kiwikami (56 features)
- Alashian by Mecislau (131 features)
- Al Bakiyye by Mevlüt Baki Tapan (19 features)
- Albic by Bryony (78 features)
- Alfen by Carlos Gomez (28 features)
- Algilez by Alan Giles (114 features)
- Alhese by ol bofosh (6 features)
- Alley's Language by Myself (28 features)
- Alopian by Étienne Poisson (140 features)
- Alpic by Taylor Selseth (140 features)
- Altairian by krikkitbot (23 features)
- Altian by Ketzia Ren (67 features)
- Alumian by Me (33 features)
- Ame language by k1234567890y (143 features)
- amman iar by David Bell (26 features)
- Ampizd by shumai (125 features)
- Amqoli by Nortaneous (35 features)
- Ancient by Matrix (131 features)
- Ancient Caspian by Brv (44 features)
- Ancient Draconian by Zarainia (140 features)
- Ancient Wiebian by IlL (19 features)
- Ancient Yakim Language by k1234567890y (95 features)
- Ancient Zelev by Enrique Gamez (71 features)
- Angosey by Daniel Bowman (70 features)
- Anikele by Nick Nothaft (85 features)
- Anikuek by Becca (70 features)
- Annese by itzal (139 features)
- anotherunnamed by Fanael (143 features)
- Anshanish by Artaxes (85 features)
- Antiranto by Kenneth Nyman (79 features)
- Anxian by Snipee356 (108 features)
- Anyael by Nyxelestia (15 features)
- Aoma by Juhhmi (124 features)
- Apelcheq Maulochsab by colz (65 features)
- Apituka by Ety (21 features)
- Apiyan by Predrag Bozovic (0 features)
- Applelang by k1234567890y (125 features)
- Arano by k1234567890y (91 features)
- Arcaicam Esperantom by Manuel Halvelik (120 features)
- Arcek by Grey_A_ (48 features)
- Archek by Grey_A_ (48 features)
- Arka by Seren Arbazard (118 features)
- Arkhuv by Ben Felix (0 features)
- Armundic by Michael M. Goessler (42 features)
- arrayfish's personal lang by arrayfish (12 features)
- Arroe by Solarius (145 features)
- Arusian by Joseph Tayon Trerotola (46 features)
- Arveyran by Ptxcx (10 features)
- Asha'ille by Arthaey Angosii (61 features)
- Asokon by Eton (46 features)
- Ata by sumana (35 features)
- Ataican by shumai (107 features)
- Athah by linejoe (62 features)
- At'ik by CDWEBI (49 features)
- Atlam by tonic (66 features)
- Atsn by mao16 (19 features)
- Attian by Waahlis (122 features)
- Audente by Bill3000 (111 features)
- Audhrinn by Scytheria (45 features)
- Aukayan by Michael M. Goessler (39 features)
- Austrian by Daniel Stanojevic (142 features)
- Austrian Celtic by Lachlan (30 features)
- Avalonian by Rhebeqah (134 features)
- Aveata by Justin R Logan (94 features)
- Avemuacha by Brv (56 features)
- Avendonian by S.C. (22 features)
- Average Conlang by Kiriyow (137 features)
- Averagelang by kanejam (142 features)
- Average language by Mily A. M. D. & CALS (38 features)
- Avorenta by Répai Attila (78 features)
- Avrelang by Kári Emil Helgason (143 features)
- Ayaryen by Agammenon Anydoros (19 features)
- Ayasthi by Zhen Lin (122 features)
- Ayeri by Carsten Becker (118 features)
- Azalian by Enrique Gamez (72 features)
- Azniar by Matthew Valleau (53 features)