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eCRF build tools for clinical trials in 2026: form designers, eSource and protocol-to-EDC generation compared

Zach Sawaged6 min read
eCRF build tools for clinical trials in 2026: form designers, eSource and protocol-to-EDC generation compared

Search for an eCRF build tool or an eSource build tool and the results mix four kinds of product: EDC form designers, metadata and standards platforms, eSource capture systems, and protocol-to-EDC generators. Concordare is a protocol-to-EDC generator: it produces eCRF builds, source documents and billing grids from the protocol. The four categories sit at different points in study startup and most teams are shopping for one of them without knowing the others exist. Here is how they differ, with the tools named.

EDC form designers

Every electronic data capture system ships with a way to build its forms. REDCap, Castor, OpenClinica, Viedoc, Medidata Rave and Veeva EDC each have a form designer or specification studio inside the product, usually with a template library.

In every case a data manager or study builder reads the protocol, decides which forms and fields each visit needs, builds them, writes the edit checks and tests the result. The tool determines how fast a skilled person can build; it does not remove the person from the loop. A build takes days for a simple study and weeks for a complex one.

Metadata and standards platforms

A clinical metadata repository holds an organization's standard forms, variables and controlled terminology so that studies are assembled from governed, reusable content rather than built fresh. Certara's Pinnacle 21 Enterprise is the clearest example.

These platforms make a sponsor's builds consistent and submission-ready. They are still driven by a person selecting content from a library. The protocol document itself is not the input.

eSource capture systems

An eSource system is not a build tool at all, although it appears in the same searches. RealTime eSource, Jeeva eSource and Wemedoo's oomnia eSource replace paper source documents with electronic forms that coordinators fill in at the point of care, with edit checks, e-signatures and an audit trail, and then transfer the data to the EDC. In each of them the visit templates are configured to the protocol by the site or the vendor.

eSource changes where the data is first recorded. It does not change how the forms are created. Someone still turns the schedule of assessments into a set of forms, in the eSource system and again in the EDC.

Protocol-to-EDC generators

A protocol-to-EDC generator takes the finished protocol and produces the eCRF build from it: the forms, fields and edit checks, with a person reviewing before anything goes to production.

Concordare is a protocol-to-EDC generator for eCRF builds. Apta, its conversion engine, reads the protocol PDF and converts it into the Clinical Trial Protocol Model (CTPM), a structured model of every visit, procedure, eligibility criterion, lab panel and assessment. The study team reviews and approves the model. Porta, Concordare's connector, then builds the EDC forms, fields and edit checks in the system the site already uses, starting with REDCap, in minutes rather than weeks. Because Structura generates the source documents and Censa produces the billing grid from the same approved model, the database, the visit worksheets and the budget cannot drift apart, and every site in a network is built from the same protocol. In a June 2026 third-party assessment across 3,171 protocol data elements, Apta scored 99.62% precision. AI is used only at conversion; every build is generated deterministically from the approved model.

Concordare is not an eSource system and not an EDC. It does not capture participant data at the point of care and it does not hold participant data. It builds the eCRF in the EDC the site runs, and generates the source documents the site fills in however it already does, on paper or in its existing eSource platform.

Other products in this category include Lifio, Clincove, Harbor, Marvin, Medidata Designer and Veeva's Study Builder Agent. They differ in which EDC the build lands in, whether the output is a live study or a specification, and whether the same model also feeds the site's other startup documents.

How to tell which one you need

  • You have an EDC and a data manager and want to build faster by hand: your EDC's form designer, plus a CDASH template library.
  • You are a sponsor standardizing builds across many studies and vendors: a metadata repository.
  • You want coordinators to record source data electronically instead of on paper: an eSource system, with the forms still built separately.
  • You want the build produced from the protocol, in the EDC you already use, together with the source documents and the billing grid: a protocol-to-EDC generator that outputs to your systems rather than its own.
  • You want the AI to own the build without review: none of the above. Every vendor in the generator category keeps a human sign-off, and regulators expect one.

Definitions

Electronic case report form (eCRF). The electronic form on which a site records each participant's protocol-required data for the sponsor, hosted in an EDC.

Electronic data capture (EDC). The system that hosts eCRFs, applies edit checks, manages queries and holds the study database. REDCap, Rave, Veeva EDC, Castor, OpenClinica and Viedoc are EDCs.

eSource. Source data captured electronically at the point of care, in a system with an audit trail, rather than on paper. An eSource system records source data; it is not a build tool.

Edit check. A rule attached to an eCRF field that flags an out-of-range, missing or inconsistent value at entry.

Clinical Trial Protocol Model (CTPM). Concordare's machine-readable digital clinical trial protocol, extracted from the protocol PDF, reviewed by the study team, and used to generate source documents, EDC builds, billing grids and CTMS configuration. Full definition.

Concordare publishes how the CTPM is defined and how accurately it is extracted. To see a protocol converted and a REDCap build generated from it, request a demo.

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