| Leading Solution | Illinois |
| LeadingIT | |
| LeadingMD.com | California |
| LeadIQ, Inc. | California |
| Leadman Electronics USA, Inc. | California |
| LeadMaster | Georgia |
| LeadMD | Arizona |
| LeadMode Digital Marketing | |
| Leadpages (US), Inc. | Minnesota |
| LeadPoint Digital | Virginia |
| Leadpops | |
| Leadr Technologies, Inc. | Texas |
| Leads Near Me, Inc. | Georgia |
| Leads Online Marketing, LLC | |
| Leads-Solution.com | |
| LeadsBridge, Inc. | Texas |
| LeadSimple, Inc. | Washington |
| Leadspace, Inc. | California |
| LeadsPanda | |
| Leadsurance | |
| Leadtail, Inc. | California |
| Leadtrack | Indiana |
| Leadum Software | Utah |
| Leadway Technology | Tennessee |
| LeadWebDesigners.com | Washington |
| Leady.com | New York |
| Leadz.com | |
| LEAF | Colorado |
| Leaf International Corporation | |
| Leaf Software Solutions | Indiana |
| LeafLink | |
| LeafTech Consulting, LLC | Colorado |
| LeafTrade | |
| LeagiON | Nevada |
| League Design Agency | |
| LeagueApps | |
| Leaguevine, Inc. | |
| Leaky Paywall | New Hampshire |
| Lean Biologix | Massachusetts |
| Lean Edge Tech | Florida |
| Lean Enterprise Software Solutions, LLC | Indiana |
| Lean Scheduling International | Florida |
| Lean Startup Co. | California |
| Lean-Agile Atlanta Unconference | Georgia |
| LeanData, Inc. | California |
| Leander Computing | Texas |
| LeanDNA | Texas |
| LeanDomainSearch | |
| LeanFM Technologies, Inc. | Pennsylvania |
| Leanplum, Inc. | California |