You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League: GYSA U14 Girls RPL               (GYSA U14 Girls)  (ID: 1a190) (Sort: Div) (Playoffs: 2)
    Team: Atlanta Fire - 01/02 Elite-Black (Atlanta Fire -)  (ID: t1krn)
    Team: Concorde Fire Central Elite      (Concorde Fire C) (ID: t1krp)
    Team: DSC 02G Revolution Premier       (DSC 02G Revolut) (ID: t1krq)
    Team: NASA G20 Elite                                     (ID: t1krr)
    Team: SSA Chelsea 02G Elite            (SSA Chelsea 02G) (ID: t1krs)
    Team: TopHat-20 Gold                                     (ID: t1krt)
    Team: UFA 02 Premier - R3/NL           (UFA 02 Premier)  (ID: t1kru)
  Kind: rec
  Sport: soccer
  Gender: female
  Country: USA
  State: GA
  Level: Division 1
  Season: Spring2016 (current: True)
  Author: CT
  Note: Unofficial
  LotteryNote: 
LeagueEnd

SortBegin
Div: Points, GoalsDelta, Least GoalsAgainst
SortEnd

RulesBegin
  PointsForWinInRegulation:  5
  PointsForWinInOvertime:  5
  PointsForWinInShootout:  5
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  2
  PercentOfGamesThatEndInTie:  0.16
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagenpat
  WeightExponent:  0.6
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  2
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
3/5/16    10:00 AM   Concorde Fire C         UFA 02 Premier    (ID: g1q3ap)
3/5/16    11:00 AM   DSC 02G Revolut   1-1   TopHat-20 Gold    (ID: g1q3aq)
3/6/16    1:00 PM    Concorde Fire C   1-1   SSA Chelsea 02G   (ID: g1q3ar)
3/6/16    1:30 PM    Atlanta Fire -    4-1   TopHat-20 Gold    (ID: g1q3as)
3/6/16    3:00 PM    DSC 02G Revolut   0-3   NASA G20 Elite    (ID: g1q3at)
3/12/16   5:00 PM    UFA 02 Premier    0-0   SSA Chelsea 02G   (ID: g1q3au)
3/13/16   3:00 PM    NASA G20 Elite    1-0   SSA Chelsea 02G   (ID: g1q3av)
3/19/16   10:00 AM   Concorde Fire C   2-1   DSC 02G Revolut   (ID: g1q3aw)
4/16/16   11:00 AM   TopHat-20 Gold          Concorde Fire C   (ID: g1q3ax)
4/16/16   3:00 PM    UFA 02 Premier    3-1   Atlanta Fire -    (ID: g1q3ay)
4/17/16   1:00 PM    NASA G20 Elite    1-2   Concorde Fire C   (ID: g1q3b1)
4/17/16   3:00 PM    TopHat-20 Gold          UFA 02 Premier    (ID: g1q3b2)
4/23/16   9:00 AM    NASA G20 Elite    1-1   UFA 02 Premier    (ID: g1q3b4)
4/23/16   11:00 AM   DSC 02G Revolut   0-0   Atlanta Fire -    (ID: g1q3b3)
4/23/16   4:00 PM    SSA Chelsea 02G   0-0   TopHat-20 Gold    (ID: g1q3b5)
4/24/16   1:30 PM    Atlanta Fire -    0-1   Concorde Fire C   (ID: g1q3b6)
4/24/16   5:00 PM    UFA 02 Premier          DSC 02G Revolut   (ID: g1q3b7)
4/30/16   11:00 AM   TopHat-20 Gold    1-2   NASA G20 Elite    (ID: g1q3b8)
5/1/16    3:30 PM    Atlanta Fire -          NASA G20 Elite    (ID: g1q3b9)
5/1/16    5:00 PM    SSA Chelsea 02G   1-1   DSC 02G Revolut   (ID: g1q3az)
5/8/16    10:00 AM   SSA Chelsea 02G         Atlanta Fire -    (ID: g1q3b0)
GamesEnd