Co-selling
Identify accounts where both sides can walk in warm — customers you both serve, prospects you're both chasing.
Customer overlap · Private by design
Find the customers and prospects both companies share.
Compare two customer or prospect lists privately. OnlyCommon reveals only the overlap — so you can co-sell, co-market, and plan expansion together without exposing either company's book of business.
- 200 free lines every month
- Invited partner needs no account to start
- Non-matching accounts are never revealed
Why overlap matters
One overlap analysis, four go-to-market plays.
The same shared-account list is the starting point for a range of joint motions.
Integration adoption
Find the shared customer base most likely to adopt a joint integration and prioritise activation there.
Expansion planning
Spot customers of one side that are prospects of the other — a natural land-and-expand path.
Co-marketing
Target joint campaigns at accounts you actually share, instead of blasting each other's full lists.
What's private, what's shared
What you upload vs what your partner sees.
What your partner sees
Only the accounts that appear on both uploaded lists — matched company, match type, and match confidence.
What your partner never sees
Every account that isn't on both lists. Your unique customers and prospects stay private to your side.
Real-world data
Match messy company records, not just exact strings.
Company names show up differently in every CRM. OnlyCommon normalizes them and looks at multiple identifiers to find genuine matches.
Domain
acme.com, acme.co.uk, subsidiaries
Company name
Cleaned and normalized (suffixes, casing, punctuation)
DUNS
Where present, used as a strong match signal
VAT / registration ID
Regional identifiers where available
Use the report
How teams typically segment the overlap.
OnlyCommon identifies the shared accounts. Your team can then organize the result using the customer, prospect, opportunity, or strategic-account context already maintained in your systems.
Shared customers
Both companies already sell to them — a natural surface for expansion and integration adoption.
Shared prospects
Neither of you has closed them yet — prime co-selling territory.
Active opportunities on either side
A live deal on one side, a relationship on the other — the fastest wins.
Strategic targets
Named-account lists both sides care about — prioritise the top 10–20.
Why not spreadsheets
Manual list exchange is risky and incomplete.
- Full lists get exposed. Once a spreadsheet leaves your systems, you can't take it back.
- VLOOKUP misses real matches. Exact-string comparisons treat "Acme, Inc." and "Acme Inc" as different companies.
- Owners get lost. A merged sheet rarely carries the account-owner context needed to actually co-sell.
- It doesn't scale. Doing it once for one partner is doable; doing it every quarter for five isn't.
What counts as a "line"?
A line is one account row processed by OnlyCommon. If each company uploads about 100 accounts, the total is 200 lines — which fits comfortably in the free plan. That's enough to run a focused test with a partner before you decide to scale up.
- 100 rows from your side + 100 from your partner = 200 lines
- Unlimited users on every plan
- Lines refresh every month on the free plan
- No per-seat pricing when you upgrade
Privacy first
Built so neither side has to over-share.
OnlyCommon reveals only the accounts that appear on both lists. Everything else stays private to the side that uploaded it.
Only shared accounts are revealed
Non-matching rows are never shown to the other company. Your full list stays yours.
Raw uploads are deleted after processing
We keep the cleaned match result, not your original spreadsheet.
Invite by secure link
Your partner can upload and join in one step — no account required to get started.
Map a partner free, then pay only for what you match.
200 free lines every month. Unlimited users. No per-seat fees. Upgrade when you're ready to map more accounts or run more partners.
- 200 free lines every month
- Invited partner needs no account to start
- Non-matching accounts are never revealed
Frequently asked questions
Compare two lists. Reveal only the overlap.
Run your first customer overlap analysis in minutes — 200 free lines every month, no CRM integration required.