The MCHF/MCDHF Collection has the capabilities to display data from multiple sources.
Transition data can be submitted in ascii files using a special format (attached below).
The submitted file will be checked for correct formattng and it will be placed in the database.
Any search will display the data and the source allowing comparison between multiple sources. Example: 
==> Example of a .lsj datafile <==
 Ground Energy =        -192.47648343
 Transitions of Z = 12  Mg V : O-like  (8 electrons). 173



   4 -192.47648471  2p(4)3P2_3P                                                 
   2 -189.35742013  2p(3)4S3_4S.3s_3S                                           
  684539.90 CM-1       146.08 ANGS(VAC)       146.08 ANGS(AIR) 
 E1  S =  1.24207e-01   GF =  2.58268e-01   AKI =  2.69085e+10 
          1.25280e-01         2.60499e-01          2.71410e+10 

   4 -192.47648343  2s(2).2p(4)3P2_3P                                          
   2 -192.46838096  2s(2).2p(4)3P2_3P                                          
    1778.25 CM-1     56235.22 ANGS(VAC)     56229.40 ANGS(AIR)
 E2  S =  1.90807e-01   GF =  1.80146e-13   AKI =  1.26657e-07

..... more transitions
==> <===