3810 ECO lines with main-line moves and diagrams. Start with the flagship families, or browse by volume.
| Name | ECO | Moves |
| Bishop's Opening: Urusov Gambit, Panov Variation | C24 | 12 |
| Bishop's Opening: Vienna Hybrid | C24 | 7 |
| Bishop's Opening: Warsaw Gambit | C24 | 7 |
| Vienna Gambit, with Max Lange Defense | C25 | 5 |
| Vienna Gambit, with Max Lange Defense: Cunningham Defense | C25 | 8 |
| Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit | C25 | 11 |
| Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Alapin Variation | C25 | 12 |
| Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Thorold Variation | C25 | 15 |
| Vienna Gambit, with Max Lange Defense: Hamppe-Muzio Gambit | C25 | 12 |
| Vienna Gambit, with Max Lange Defense: Knight Variation | C25 | 7 |
| Vienna Gambit, with Max Lange Defense: Pierce Gambit | C25 | 9 |
| Vienna Gambit, with Max Lange Defense: Quelle Gambit | C25 | 8 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit | C25 | 7 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Fraser-Minckwitz Defense | C25 | 10 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Main Line | C25 | 9 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Paulsen Defense | C25 | 10 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense | C25 | 10 |
| Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Zukertort Defense | C25 | 10 |
| Vienna Game | C25 | 3 |
| Vienna Game: Anderssen Defense | C25 | 4 |
| Vienna Game: Fyfe Gambit | C25 | 5 |
| Vienna Game: Giraffe Attack | C25 | 5 |
| Vienna Game: Hamppe-Meitner Variation | C25 | 5 |
| Vienna Game: Hamppe-Muzio Gambit | C25 | 11 |
| Vienna Game: Hamppe-Muzio, Dubois Variation | C25 | 16 |
| Vienna Game: Max Lange Defense | C25 | 4 |
| Vienna Game: Omaha Gambit | C25 | 5 |
| Vienna Game: Paulsen Variation | C25 | 5 |
| Vienna Game: Paulsen Variation | C25 | 10 |
| Vienna Game: Paulsen Variation, Mariotti Gambit | C25 | 10 |
| Vienna Game: Philidor Countergambit | C25 | 6 |
| Vienna Game: Pierce Gambit, Rushmere Attack | C25 | 17 |
| Vienna Game: Stanley Variation, Meitner-Mieses Gambit | C25 | 9 |
| Vienna Game: Zhuravlev Countergambit | C25 | 6 |
| Bishop's Opening: Horwitz Gambit | C26 | 6 |
| Bishop's Opening: Vienna Hybrid, Spielmann Attack | C26 | 7 |
| Vienna Game: Falkbeer Variation | C26 | 4 |
| Vienna Game: Mengarini Variation | C26 | 5 |
| Vienna Game: Mieses Variation | C26 | 5 |
| Vienna Game: Mieses Variation, Erben Gambit | C26 | 8 |
| Vienna Game: Paulsen Variation, Pollock Gambit | C26 | 11 |
| Vienna Game: Stanley Variation | C26 | 5 |
| Vienna Game: Stanley Variation, Eifel Gambit | C26 | 8 |
| Vienna Game: Stanley Variation, Reversed Spanish | C26 | 6 |
| Bishop's Opening: Boden-Kieseritzky Gambit | C27 | 7 |
| Bishop's Opening: Boden-Kieseritzky Gambit, Lichtenhein Defense | C27 | 8 |
| Vienna Game: Adams' Gambit | C27 | 11 |
| Vienna Game: Frankenstein-Dracula Variation | C27 | 6 |
| Vienna Game: Stanley Variation, Alekhine Variation | C27 | 13 |
| Vienna Game: Stanley Variation, Frankenstein-Dracula Variation | C27 | 20 |
| Vienna Game: Stanley Variation, Monster Declined | C27 | 10 |
| Bishop's Opening: Vienna Hybrid, Hromádka Variation | C28 | 9 |
| Vienna Game: Stanley Variation, Bronstein Gambit | C28 | 9 |
| Vienna Game: Stanley Variation, Three Knights Variation | C28 | 6 |
| Vienna Game: Heyde Variation | C29 | 11 |
| Vienna Game: Vienna Gambit | C29 | 5 |
| Vienna Game: Vienna Gambit, Bardeleben Variation | C29 | 10 |
| Vienna Game: Vienna Gambit, Breyer Variation | C29 | 10 |
| Vienna Game: Vienna Gambit, Kaufmann Variation | C29 | 11 |
| Vienna Game: Vienna Gambit, Main Line | C29 | 6 |
| Vienna Game: Vienna Gambit, Modern Variation | C29 | 9 |
| Vienna Game: Vienna Gambit, Paulsen Attack | C29 | 9 |
| Vienna Game: Vienna Gambit, Steinitz Variation | C29 | 7 |
| Vienna Game: Vienna Gambit, Wurzburger Trap | C29 | 15 |
| King's Gambit | C30 | 3 |
| King's Gambit Declined: Classical Variation | C30 | 4 |
| King's Gambit Declined: Classical Variation | C30 | 7 |
| King's Gambit Declined: Classical Variation, Euwe Attack | C30 | 11 |
| King's Gambit Declined: Classical Variation, Rotlewi Countergambit | C30 | 7 |
| King's Gambit Declined: Classical Variation, Rubinstein Countergambit | C30 | 8 |
| King's Gambit Declined: Classical Variation, Walthoffen Attack | C30 | 5 |
| King's Gambit Declined: Classical, Hanham Variation | C30 | 8 |
| King's Gambit Declined: Classical, Réti Variation | C30 | 13 |
| King's Gambit Declined: Classical, Soldatenkov Variation | C30 | 7 |
| King's Gambit Declined: Classical, Svenonius Variation | C30 | 16 |
| King's Gambit Declined: Hobbs-Zilbermints Gambit | C30 | 8 |
| King's Gambit Declined: Keene Defense | C30 | 6 |
| King's Gambit Declined: Keene's Defense | C30 | 4 |
| King's Gambit Declined: Keene's Defense | C30 | 5 |
| King's Gambit Declined: Mafia Defense | C30 | 4 |
| King's Gambit Declined: Miles Defense | C30 | 6 |
| King's Gambit Declined: Norwalde Variation | C30 | 4 |
| King's Gambit Declined: Norwalde Variation, Bücker Gambit | C30 | 9 |
| King's Gambit Declined: Norwalde Variation, Schubert Variation | C30 | 7 |
| King's Gambit Declined: Panteldakis Countergambit | C30 | 4 |
| King's Gambit Declined: Panteldakis Countergambit, Greco Variation | C30 | 6 |
| King's Gambit Declined: Panteldakis Countergambit, Pawn Sacrifice Line | C30 | 11 |
| King's Gambit Declined: Panteldakis Countergambit, Schiller's Defense | C30 | 6 |
| King's Gambit Declined: Panteldakis Countergambit, Shirazi Line | C30 | 8 |
| King's Gambit Declined: Panteldakis Countergambit, Symmetrical Variation | C30 | 11 |
| King's Gambit Declined: Petrov's Defense | C30 | 4 |
| King's Gambit Declined: Queen's Knight Defense | C30 | 4 |
| King's Gambit Declined: Senechaud Countergambit | C30 | 6 |
| King's Gambit Declined: Soller-Zilbermints Gambit | C30 | 6 |
| King's Gambit Declined: Zilbermints Double Countergambit | C30 | 4 |
| King's Gambit Declined: Zilbermints Double Gambit | C30 | 6 |
| King's Gambit Declined: Falkbeer Countergambit | C31 | 4 |
| King's Gambit Declined: Falkbeer Countergambit Accepted | C31 | 5 |
| King's Gambit Declined: Falkbeer Countergambit, Anderssen Attack | C31 | 7 |
| King's Gambit Declined: Falkbeer Countergambit, Blackburne Attack | C31 | 5 |
Family pages group related lines: the family head with a diagram, main continuations and every catalogued variation.