Ranked · 3 assessed
Ordered by Agency List ScoreSalesforce development and data integration for business efficiency
Custom Software and Mobile Application Development Experts
Custom software and strategic consulting for tailored business solutions
About this ranking
What this page ranks
This page ranks the 3 custom software development agencies in St Louis, Missouri that have been assessed on the Agency List Score, out of 3 listed.
The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.
Cohorts and awards
Agencies are compared within a cohort — here, Custom Software Development in St Louis, Missouri. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 3, so no award can be issued here.
Paid placement
Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.
Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.
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Questions
- How many custom software development agencies are in St Louis, Missouri?
- 3 are listed on Agency List in St Louis, Missouri. 3 of them have been assessed on the Agency List Score as of October 2026.
- Which custom software development agency in St Louis, Missouri is ranked highest?
- Ossia Systems, with an Agency List Score of 78.8, ranks #1 of 3 assessed agencies in Custom Software Development in St Louis, Missouri.
- How is the ranking determined?
- By Agency List Score, within the Custom Software Development in St Louis, Missouri cohort of 3 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.