Elliptic Curves with Complex Multiplication
- Defined over extensions of type (2,...,2). Tables by Joan-C. Lario.
- http://www-ma2.upc.edu/~lario/ellipticm.htm

Research Information - Larry Lehman
- Includes a list of publications with abstracts, and tables of elliptic curves of small rank and various conductors.
- http://people.umw.edu/~llehman/research.htm

Elliptic Curve Data
- Tables of elliptic curves of small conductor in Mathematica format.
- http://library.wolfram.com/infocenter/Demos/154/

Iwasawa Invariants of Elliptic Curves
- For each curve (labelled as in Cremona) the mu and lambda-invariants are listed for the primes between 2 and 17. By Robert Pollack.
- http://math.bu.edu/people/rpollack/Data/data.html

MODI - Interactive Modular Forms Data Base
- Data about modular forms which are computed on demand or taken from a data base of precomputed items, maintained by Nils-Peter Skoruppa.
- http://wotan.algebra.math.uni-siegen.de/~modi/

Classical Modular Polynomials
- Tables of modular polynomials Phi_l for prime l to 270, computed by Michael Rubinstein. Gzipped text and specially compressed formats.
- http://www.math.uwaterloo.ca/~mrubinst/modularpolynomials/phi_l.html

Deformations of Maass Forms
- Tabulated by Stefan Lemurell.
- http://www.math.chalmers.se/~sj/Maass/

Mordell Curves
- Minimal known positive and negative k for Mordell curves (y^2=x^3+k) of given rank, by Tom Womack.
- http://www.tom.womack.net/maths/mordellc.htm

Modular Polynomials
- Tables and Maple software for modular polynomials of composite level by Masanari Kida.
- http://matha.e-one.uec.ac.jp/~kida/modularpoly.html

Best Known Conductors for Elliptic Curves of Given Rank
- Up to rank 9, by Tom Womack.
- http://tom.womack.net/maths/conductors.htm

Modular Forms Database
- Tables computed by William Stein using HECKE, LiDIA, PARI and Magma.
- http://modular.fas.harvard.edu/Tables/

Class Polynomials of CM-fields
- Class polynomials of the principal orders up to discriminant -300000, giving values of the Weber invariants. By Annegret Weng.
- http://www.exp-math.uni-essen.de/zahlentheorie/classpol/class.html

High Rank Elliptic Curves with Prescribed Torsion
- The highest rank currently known for an elliptic curve over Q with each of the possible torsion groups. Compiled by Andrej Dujella.
- http://www.math.hr/~duje/tors/tors.html

Elliptic Curves with Unusual Torsion
- Two tables: the smallest conductor observed for a given rank and torsion, and the smallest conductor observed among curves of rank zero with a given Sha and torsion. Maintained by Tom Womack.
- http://tom.womack.net/maths/torsion.htm

Drinfeld Modules
- Complete tables of sign-normalized, rank one, Drinfeld modules on the elliptic curves over finite fields of order less than 16.
- http://www.math.umass.edu/~dhayes/dmods.html

Siegel Forms
- Coefficients of some Siegel automorphic forms, by Richard Borcherds.
- http://math.berkeley.edu/~reb/papers/siegel/

Rational Points on Elliptic Curves
- A wide collection of known integer solutions to elliptic curves and their corresponding Diophantine equations, presented by Hisanori Mishima.
- http://www.asahi-net.or.jp/~KC2H-MSM/ec/eca1/index.htm

Infinite Families of Elliptic Curves with Prescribed Torsion
- Compiled by Andrej Dujella.
- http://www.math.hr/~duje/tors/generic.html