Opening brief
Which residual stack are you actually on, and what boards into Fiserv vs TSYS without a war room?
ISOStack is a public comparison sheet for the back-office software merchant-services shops buy: CRM, residual calc, boarding, underwriting helpers, agent portals. G2 will push HubSpot into this category. Vendor blogs will rank themselves #1. We keep a matrix of what each product claims to connect to, what pricing is public, and where the gaps are.
On the sheet this week
| Product | Lane | What ops people ask first | Public price |
|---|---|---|---|
| NMI Merchant Centralex-IRIS CRM | platform | Boards across Fiserv AccessOne, TSYS ELAPP/Express, Worldpay MAG, Elavon, others. Residuals + CRM in one seat. | Quote only |
| SplitRun | residuals | Import processor residual files, run splits/deductions, spit agent statements. Not trying to replace your CRM. | From ~$49-$299/mo listed |
| Twill | platform | AI-forward ISO OS. Residual feeds named for TSYS, Fiserv, Global, Elavon, Maverick, Priority, Kurv, North. | % of volume (vendor-stated) |
| ISOhub | crm | Merchant-services CRM with residual/commission module. Processor matrix not fully public. | Demo / quote |
| PegasusCRM | crm | Enterprise ISO CRM. Public residual modules name TransFirst, Vantiv, First Data; universal file import for others. | From $895/mo minimum (listed) |
| ResidualsOS | residuals | Residual book close: upload processor files, reconcile to processor totals, partner splits, lock/publish statements. | Priced by active MIDs (vendor-stated) |
Snippet only. Open the tool matrix for AboveBoard, Fullcast, Luqra, Agreement Express (NMI), Centrex (MCA-adjacent), filters, and outbound links. Unknown cells stay unknown on purpose.
Why this exists
Green Sheet still sells the attention of ISO owners. The software vendors already buy those pages. What they do not have is a neutral place that answers: does this residual tool read Omaha files, can boarding hit TSYS Express without rekeying, and is pricing even public? That is the job.
What we will not print
Fake 9.4/10 scores. “Editor’s Choice” badges for whoever paid first. Category pages that mix Zoho Projects into merchant CRM. If a cell is empty, it stays empty until a public source or a claimed profile fills it.