The Collaborative International Dictionary of English v.0.48:

Equally \E"qual*ly\, adv.
   In an equal manner or degree in equal shares or proportion;
   with equal and impartial justice; without difference; alike;
   evenly; justly; as, equally taxed, furnished, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

equally
    adv 1: to the same degree (often followed by `as'); "they were
           equally beautiful"; "birds were singing and the child
           sang as sweetly"; "sang as sweetly as a nightingale"; "he
           is every bit as mean as she is" [syn: equally, as,
           every bit]
    2: in equal amounts or shares; in a balanced or impartial way;
       "a class evenly divided between girls and boys"; "they split
       their winnings equally"; "deal equally with rich and poor"
       [syn: evenly, equally] [ant: unequally, unevenly]

Moby Thesaurus II by Grady Ward, 1.0:

60 Moby Thesaurus words for "equally":
   according to circumstances, accordingly, ad eundem, alike, as,
   as is, as it is, as matters stand, as well, at that rate,
   ceteris paribus, coequally, coextensively, coincidentally,
   congruently, consequently, correspondently, correspondingly,
   coterminously, deservedly, disinterestedly, dispassionately, ditto,
   duly, equitably, equivalently, evenly, fair, fairly, fifty-fifty,
   ibid, ibidem, identically, impartially, impersonally, in that case,
   in that event, indifferently, just the same, justifiably,
   justifiedly, justly, likewise, meetly, properly, proportionately,
   rightfully, rightly, same here, so, squarely, synonymously,
   that being so, the same way, therefore, under the circumstances,
   upon even terms, warrantably, warrantedly, without distinction