All tools

The Ranomics protein-design tool catalog.

Run feasibility scoring, generative binder design, structure prediction, and library planning from a single USD wallet. Results land on your job page — ranked candidates with downloadable structures from the design and co-folding pipelines, sequences from ProteinMPNN, predicted structures from the folding tools — and hand off cleanly into a Ranomics wet-lab campaign when a design is worth validating.

Step 1 Find the patch worth aiming at Score your target’s surface with Epitope Scout and see which patches are realistic to bind, before you spend any GPU time. It is free.
Step 2 Design binders against it Upload your target, mark the residues you want the new binder to touch, and get back candidates ranked by confidence. 8 tools below do this — start with one, clone the run, adjust, re-run.
Step 3 Check them on the computer first Fold the shortlist again with a second, independent model to see whether the answer holds up, and put fresh sequences on any backbone — the folded shape on its own, before a sequence is chosen for it — that looks promising.
Step 4 Then test them at the bench Hand the shortlist into a Ranomics wet-lab campaign. Same team, same data loop — design and wet-lab share one pipeline.
Check if my target is a good one to bind 1 tool
Make new binders for my target 8 tools
BindCraft

You have a target structure and know roughly which patch of its surface you want gripped, and you want brand-new mini-proteins of 60 to 150 residues built to grip it. Every candidate is refolded and filtered before you see it, so what comes back is already a shortlist.

Runtime 45 min Pacesa et al., Nature 2025
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BoltzGen

You have a target and have not settled on what shape the binder should be. One model here aims mini-proteins, nanobodies, antibodies or peptides at the same site, so you can compare formats instead of guessing. The only design tool here that handles sugars and modified residues on the target natively.

Runtime 15 to 60 min Stark et al., bioRxiv 2025
See how it works
ESMFold2 design

You want a paired heavy + light scFv — a single-chain antibody fragment — with all six binding loops designed against your target at once, which no other tool here does. It also builds small de novo binders by a different route to RFdiffusion, worth a run when a target has gone quiet. For single-domain nanobodies use RFantibody.

Runtime ~10 min to ~12 min Candido et al., bioRxiv 2026
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IgGM

You have an antibody or nanobody and an antigen, and you want to redesign its binding loops, humanise its framework, raise its affinity, or just see how the two dock — one model does all of it, aimed at the epitope you name. For a nanobody from scratch use RFantibody; for a paired heavy and light antibody fragment use ESMFold2 design.

Runtime ~2 min to scales with samples x masked positions min Wang et al., ICLR 2025
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Proteina-Complexa

You have a hard target — a recessed pocket, a site spanning two chains, or a small molecule rather than a protein — and you want to throw as much search at it as your balance allows. Every candidate is re-folded and scored against your target as it is generated, and the run fans out across as many GPUs as you fund.

Runtime ~9 to 15 min to 1 to 3 min Didi et al., ICLR 2026
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PXDesign

You have a target and you want every single candidate to arrive with a real AlphaFold2 confidence score against that target, not a cheaper stand-in. This is the pipeline Ranomics runs for its own wet-lab campaigns. For design without that filtering step use BindCraft; for antibody formats use RFantibody or IgGM.

Runtime 30 to 60 min Bennett, N. R., Coventry, B., Goreshnik, I., et al. "Improving de novo protein binder design with deep learning." Nature Communications 14, 2625 (2023). Ranomics in-house pipeline; scoring stage uses AF2 Initial Guess.
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RFantibody

You have a target structure and want nanobodies — single-domain antibodies you can carry straight into yeast display, mammalian display or a hybridoma workflow. Each candidate is refolded and scored against the target before you see it. For non-antibody mini-proteins use RFdiffusion or BindCraft; for sugar-coated targets use BoltzGen.

Runtime 15 to 60 min Bennett et al., Nature 2026
See how it works
RFdiffusion

You have a target structure and a patch of its surface you want gripped, and you want brand-new binders of whatever shape works — the general-purpose starting point for de novo design. Every candidate comes back with a real AlphaFold2 confidence score against your own target. For antibody or nanobody formats use RFantibody or IgGM instead.

Runtime 25 to 40 min (4 to 8 designs) Watson, J. L., Juergens, D., Bennett, N. R., et al. "De novo design of protein structure and function with RFdiffusion." Nature 620, 1089 to 1100 (2023). Composite pipeline: RFdiffusion backbones, ProteinMPNN sequences, and AF2 multimer validation.
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Choose sequences for a structure I already have 1 tool
Predict or check a 3D structure 5 tools
AlphaFold2

You have a sequence and want the most trusted 3D prediction of it, with per-residue confidence you can act on. It searches for related natural sequences first, which is where the accuracy comes from and where the time goes. For a faster answer use ColabFold or ESMFold; to score a binder against its target use Boltz-2.

Runtime 5 to 10 min Jumper et al., Nature 2021 (AF2); Mirdita et al., Nature Methods 2022 (ColabFold)
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Boltz-2

You already have a binder sequence and the target it should hit, and you want to know whether they actually stick together before you order DNA. Returns the predicted complex and a 0-to-1 interface confidence score. Trained on antibody-antigen complexes, so it is a genuinely second opinion next to AlphaFold2.

Runtime <1 min to ~3 min Passaro et al., bioRxiv 2025
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ColabFold

You have a sequence and want its 3D shape in a minute or two, trading a little accuracy for speed. It skips the search for related natural sequences that full AlphaFold2 runs. Use it to triage a batch; use AlphaFold2 when the answer has to be right.

Runtime 1 to 2 min Mirdita et al., Nature Methods 2022
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ESMFold

You have one protein sequence and want its 3D shape in about 30 seconds. No search for relatives, so it works on designed or orphan sequences that have no natural family to align against. One chain only — for complexes use ColabFold or AlphaFold2.

Runtime 0.5 to 1 min Lin et al., Science 2023
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OpenDDE co-folding

You have a complex that is not all protein — protein with DNA, with RNA, or with a bound small molecule — and you want the whole thing folded together in one prediction. For a plain protein-protein or protein-peptide complex, Boltz-2 is faster and cheaper.

Runtime ~2 to 8 min Aureka AI Research, OpenDDE-Preview, arXiv 2026
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See if a binder will hold up in the lab 1 tool
Side-by-side comparison runtime · paper
Tool Best for Typical runtime Paper / Repo
AlphaFold2 af2 You have a sequence and want the most trusted 3D prediction of it, with per-residue confidence you can act on. It searches for related natural sequences first, which is where the accuracy comes from and where the time goes. For a faster answer use ColabFold or ESMFold; to score a binder against its target use Boltz-2.
runtime: 5 to 10 min
BindCraft bindcraft You have a target structure and know roughly which patch of its surface you want gripped, and you want brand-new mini-proteins of 60 to 150 residues built to grip it. Every candidate is refolded and filtered before you see it, so what comes back is already a shortlist.
runtime: 45 min
Boltz-2 boltz2 You already have a binder sequence and the target it should hit, and you want to know whether they actually stick together before you order DNA. Returns the predicted complex and a 0-to-1 interface confidence score. Trained on antibody-antigen complexes, so it is a genuinely second opinion next to AlphaFold2.
runtime: <1 min to ~3 min
BoltzGen boltzgen You have a target and have not settled on what shape the binder should be. One model here aims mini-proteins, nanobodies, antibodies or peptides at the same site, so you can compare formats instead of guessing. The only design tool here that handles sugars and modified residues on the target natively.
runtime: 15 to 60 min
ColabFold colabfold You have a sequence and want its 3D shape in a minute or two, trading a little accuracy for speed. It skips the search for related natural sequences that full AlphaFold2 runs. Use it to triage a batch; use AlphaFold2 when the answer has to be right.
runtime: 1 to 2 min
ESMFold esmfold You have one protein sequence and want its 3D shape in about 30 seconds. No search for relatives, so it works on designed or orphan sequences that have no natural family to align against. One chain only — for complexes use ColabFold or AlphaFold2.
runtime: 0.5 to 1 min
ESMFold2 design esmfold2-design You want a paired heavy + light scFv — a single-chain antibody fragment — with all six binding loops designed against your target at once, which no other tool here does. It also builds small de novo binders by a different route to RFdiffusion, worth a run when a target has gone quiet. For single-domain nanobodies use RFantibody.
runtime: ~10 min to ~12 min
IgGM iggm You have an antibody or nanobody and an antigen, and you want to redesign its binding loops, humanise its framework, raise its affinity, or just see how the two dock — one model does all of it, aimed at the epitope you name. For a nanobody from scratch use RFantibody; for a paired heavy and light antibody fragment use ESMFold2 design.
runtime: ~2 min to scales with samples x masked positions min
ProteinMPNN mpnn You have a backbone — a 3D shape with no sequence decided yet — and need amino-acid sequences that will fold into it. Ranked candidates come back in about 30 seconds. To generate the backbone in the first place, run a binder design tool and feed its PDB in here.
runtime: 1 min
OpenDDE co-folding opendde You have a complex that is not all protein — protein with DNA, with RNA, or with a bound small molecule — and you want the whole thing folded together in one prediction. For a plain protein-protein or protein-peptide complex, Boltz-2 is faster and cheaper.
runtime: ~2 to 8 min
Proteina-Complexa proteina You have a hard target — a recessed pocket, a site spanning two chains, or a small molecule rather than a protein — and you want to throw as much search at it as your balance allows. Every candidate is re-folded and scored against your target as it is generated, and the run fans out across as many GPUs as you fund.
runtime: ~9 to 15 min to 1 to 3 min
PXDesign pxdesign You have a target and you want every single candidate to arrive with a real AlphaFold2 confidence score against that target, not a cheaper stand-in. This is the pipeline Ranomics runs for its own wet-lab campaigns. For design without that filtering step use BindCraft; for antibody formats use RFantibody or IgGM.
runtime: 30 to 60 min
RFantibody rfantibody You have a target structure and want nanobodies — single-domain antibodies you can carry straight into yeast display, mammalian display or a hybridoma workflow. Each candidate is refolded and scored against the target before you see it. For non-antibody mini-proteins use RFdiffusion or BindCraft; for sugar-coated targets use BoltzGen.
runtime: 15 to 60 min
RFdiffusion rfdiffusion You have a target structure and a patch of its surface you want gripped, and you want brand-new binders of whatever shape works — the general-purpose starting point for de novo design. Every candidate comes back with a real AlphaFold2 confidence score against your own target. For antibody or nanobody formats use RFantibody or IgGM instead.
runtime: 25 to 40 min (4 to 8 designs)