Purely technical
Hanon – The virtuoso pianist
Arthur Gold & Robert Fizdale – Hanon revisited: Contemporary piano exercises
Ferdinand Beyer – Preparatory school op. 101
Albert BiehlThe elements of piano playing op,. 30 (similar to Pischna)
25 easy and progressive studies op. 44
Henri Herz – Scales and exercises (Pischna like)
Isidore Phillip Complete School of Technique for the piano
Alfred Cortot Rational principles of pianoforte technique
Erno Dohnanyi – Essential finger exercises for obtaining a reliable piano tehcnique.
Blanche H. Rennie Hand culture – Finger hand and arm gymnastics at the piano giving strength, freedom and independence.
Johannes Brahms – 51 exercises
PischnaThe little Pischna – 48 practice pieces
Technical studies: 60 progressive exercises
Louis Plaidy – Technical studies for the piano
Alloy Schmitt – Preparatory exercises, op. 18
Geoffrey Tankard & Eric Harrisson – Pianoforte technique on an hour a day.
Fredrick Wieck – Piano studies (Wieck was Clara Schumann’s father and teacher)
Melodic exercisesJuan Arriaga – Estudios o caprichos
Henri Lemoine – Etudes Enfantines op. 37
Johann Hummel – Piano forte school – massive keyboard tutor with over 2200 exercises/miniatures.
James Hook – Guida de musica (2 volumes) – exercises and little pieces.
Daniel Gottlob Turk – Pieces for aspiring players (120 melodic studies in 2 volumes)
Anton Arenski – 12 Etudes for piano op. 74
Issac Albeniz – 7 studies op. 65
Moritz Moskowski20 little etudes for piano, op. 91
Esquisses techniques, op. 97
Etudes op. 72
Cornelius Gurlitt 24 easy melodious studies op. 50
The first steps of the young pianist, op. 82
The easiest studies in velocity, op. 83
25 easy studies without octaves, op. 130
24 melodious studies, op. 131
School of velocity for beginners, op. 141
Melodious studies op. 50
Rhythmical studies op. 80
Studies on scales and arpeggios, op. 85
50 daily exercises in Canon form, op. 90
Very first studies, op. 187
Muzio Clementi Introduction to the art of playing the pianoforte op. 42 and op. 43
Preludes and exercises (school of scales) – a prelude in a certain key is followed by technical exercises in that key. The preludes are short and usually interesting. The exercises are boring and (in my opinion) can be skipped. Chopin had a high opinion of them and assigned them to his students.
Gradus ad parnassum
Hermann BerensSchool of velocity op. 61
50 piano pieces for beginners op. 70
20 etudes for beginners op. 79
Henry Bertini24 studies op. 29
24 studies op. 32
25 studies op. 100
A progressive and complete method for the pianoforte.
Streabogg12 very easy and melodious studies op. 63
12 easy and melodious studies op. 64
G. Eggeling – Melodious studies in octaves, op. 90
Stephen Heller Etudes op. 45
Etudes op. 46
Etudes op. 47
The art of phrasing op. 16
Studies for rhythm and expression op. 125
Carl CzernyKeyboard school – A four volume keyboard treatise. Volume 1: fundamentals and beginning technique. Volume 2: fingering. Volume 3: interpretation and expression. Volume 4: Discusses the interpretation of Beethoven’s works and describes the six styles of playing current at the time. Leschetizky teaching was very much influenced by it (he was a student of Czerny).
Etudes op. 139 (progressive studies); op. 261 (passage playing); op. 299 (school of velocity); op. 337 (daily studies); op. 599 (method for beginners); op. 636 (finger dexterity); op. 718 (left hand); op. 740 (art of finger dexterity); op. 777 (five-finger studies); op. 821 (8 measure exercises); op. 823 (the little pianist); op. 849 (new studies in technique) – Tip of the iceberg. There are more, but these are the most used.
Frederic ChopinEtudes op. 10
Etudes op. 25
Trois nouvelles etudes
Giuseppe Concone25 melodic studies op. 24
15 studies in style and expression op. 25
24 Brilliant studies op. 37
20 studies on the singing touch op. 30
15 studies in expression op. 44
Johann Baptist Cramer – 84 etudes op. 50 (Beethoven had a high regard for those)
Adolf Jensen – 25 studies op. 32 (3 books)
Theodor Kirchner - Little studies op. 71
Theodor Kullak – The scholl of octave playing
Louis KohlerFirst studies for the piano, op. 50
Studies in easy passage-playing, op. 85
Easiest studies for the piano, op. 151
12 easy studies for the piano op. 157
Elementary studies in piano playing op. 163
The very easiest studies op. 190
Children’s exercises and melodies, op. 218
Short school of velocity without octaves, op. 242
Practical method for the pianoforte. Op. 249
The first lessons in finger dexterity, op. 232
Theodore Lack – Etudes elegantes op. 30
Adolphe Clair le Carpentier – Piano method
Felix le Couppey25 very easy etudes op. 17
25 progressive studies for mechanisme and light touch, op. 20
15 preparatory studies to Czerny’s School of velocity, op. 26
Studies in expression, op. 6
Exercises in the form of studies, op. 5
L’art du piano (50 etudes con annotations)
Ecole du mechanisme du piano
24 etudes primaires
Cours de piano elementaire et progressif
Alexander Dorn – 24 studies in all major and minor keys, op. 100
Jean Baptiste DuvernoyThe school of mechanisme, op. 120
Elementary studies, op. 176
Benjamin Godard – Etudes enfantines op. 149 (4 books)
Enrique Granados – Six Expressive Studies
Franz LisztEtudes op. 1 (S136)
Tranascendental studies
Etudes de concert
Robert Schumann – Symphonic studies
Albert LoeschornMelodious studies op. 52
Studies for piano op. 65
Studies for piano op. 66
Universal piano studies op. 169, 170, 171.
Etude melodieuses op. 38
60 melodious practices for beginners op. 84
Children’s hours op. 96
Edward Macdowell – 12 Etudes op. 39
Ludwig Schytte25 modern studies for the pianoforte op. 68
Special melodic studies (10 volumes)
25 melodious studies op. 108
Easy characteristic studies op. 95
25 easy studies op. 160
School of modern pianoforte playing op. 174
Thomas Dunhill – The wheel of progress – melodious pianoforte studies in various styles.
Camille Stamaty Singing touch and technique op. 37
Rhythmic training for the fingers (60 studies)
Samuel Adler – Gradus (60 studies in 3 books)
Bela Bartok – Three studies, op. 18 (Sz 72)
John Biggs – Twelve little studies
Claude Debussy – Etudes
Wally Karveno – Etude Impressioniste
Thomas Pitfield – Studies on an English dance tune
Andrzej Panufnik – Six miniature studies.
Alec Rowley 12 little studies op. 13
30 melodious and rhythmic studies, op. 42 and 43
Etudes in tonality, op. 44
Polyrhythms, op. 50
Ernst Toch10 studies for beginners, op. 59
10 easy studies op. 58
10 studies of medium difficulty op 57
10 recital studies op. 56
10 concert studies op. 55
Alexander ScriabinEtudes:
Op.2 No.1
Op.8 No.1 - 12
Op.42 No.1 - 8
Op.49 No.1
Op.56 No.4
Op.65 No.1 – 3
Sergei Rachmaninoff - Etudes Tableaux op. 39
Gyorgy Ligetti – Piano etudes
Donald Waxman – 50 etudes (4 books)
Sergei BortkiewskiEtudes op. 15
Etudes op. 29
I am sure there are more.

Best wishes,
Bernhard.