T

Tessl

Tessl sells tools for developers and engineering teams to manage, evaluate and distribute skills and context for AI coding agents.

StageLate-stage

Founded2024

HeadquartersLondon, United Kingdom

StatusPrivate

Product

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Tessl Registry Developer tool Sold on its own

  Tessl Registry lets developers discover, version, evaluate and security-check skills that supply instructions to AI coding agents.

Similar products 65

No sourced competitor yet: no filing, vendor document or measured-market report read so far names a rival for this company, so none is asserted. The companies below are the closest by what their products do.

How this list is ranked ↗

KAKlira AIUndisclosedTessl Registry and Klira SDK both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareLLatentUndisclosedTessl Registry and Latent both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareSStacktraceUndisclosedTessl Registry and Stacktrace Fleet both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareAAArthur AIEarly-stageTessl Registry and Arthur Agent Development Toolkit both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareSSalusUndisclosedTessl Registry and Salus both list guardrails and safety; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareNnRouterUndisclosedTessl Registry and nRouter LLM Gateway both list guardrails and safety; scale not recorded for either; ships API service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareFAFiddler AILate-stageTessl Registry and Fiddler AI Governance, Risk Management, and Compliance both list guardrails and safety; same layer and the same scale band (growth-stage private).2 of 2 capabilitiesShared product typeSame scale bandCompareFAFuture AGIUndisclosedTessl Registry and Future AGI both list guardrails and safety; scale not recorded for either; ships AI agent, API service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareMAMaxim AIUndisclosedTessl Registry and Bifrost both list guardrails and safety; scale not recorded for either; ships application, infrastructure service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareGGuild.aiUndisclosedTessl Registry and Guild agent control plane both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareUUpsonicUndisclosedTessl Registry and AgentOS both list guardrails and safety; scale not recorded for either; ships infrastructure service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareNNeuralTrustEarly-stageTessl Registry and TrustGate both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareTTrueFoundryEarly-stageTessl Registry and TrueFoundry MCP Gateway both list guardrails and safety; scale not recorded for either; ships API service, agent platform and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareOOrq.aiUndisclosedTessl Registry and AI Gateway both list guardrails and safety; scale not recorded for either; ships API service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareHAHamming AIEarly-stageTessl Registry and Hamming both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAAdversa AIUndisclosedTessl Registry and Coding Agent Security Platform both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAFAgentic FabriqUndisclosedTessl Registry and Agentic Fabriq both list guardrails and safety; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareDADynamo AIUndisclosedTessl Registry and DynamoGuard both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareLALumenova AIUndisclosedTessl Registry and AI Gateway both list guardrails and safety; scale not recorded for either; ships infrastructure service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareDDatadogPublicTessl Registry and Agent Observability both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeComparePGPrediction GuardEarly-stageTessl Registry and Prediction Guard Control Plane both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAAutomation AnywhereUndisclosedTessl Registry and AI Governance both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareAAAlinia AIEarly-stageTessl Registry and Seny both list guardrails and safety; scale not recorded for either; ships model API rather than the same layer.2 of 2 capabilitiesDifferent layerCompareOOktaPublicTessl Registry and Okta for AI Agents both list guardrails and safety; scale not recorded for either; ships application and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAurascapeEarly-stageTessl Registry and Zero-Bypass MCP Gateway both list guardrails and safety; scale not recorded for either; ships infrastructure service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareDDecaworkUndisclosedTessl Registry and Decawork both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareRAResemble AIEarly-stageTessl Registry and Resemble Watermarker both list guardrails and safety; scale not recorded for either; ships API service and application rather than the same layer.1 of 2 capabilitiesDifferent layerCompareRRequestyEarly-stageTessl Registry and Requesty AI Gateway both list guardrails and safety; scale not recorded for either; ships API service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareSASingulr AIEarly-stageTessl Registry and Singulr Agent Pulse both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareZZenityLate-stageTessl Registry and Zenity Platform both list guardrails and safety; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerSame scale bandCompareOObiguardUndisclosedTessl Registry and Governance AI both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareRRunlayerEarly-stageTessl Registry and ToolGuard both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareWWitnessAIEarly-stageTessl Registry and Witness Protect both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareZZapierLate-stageTessl Registry and AI Guardrails by Zapier both list guardrails and safety; Tessl's scale not recorded.1 of 2 capabilitiesShared product typeComparePSPillar SecurityEarly-stageTessl Registry and Runtime Guardrails both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerComparePPreambleUndisclosedTessl Registry and AI Threat Detection both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareFFabraixUndisclosedTessl Registry and Nyx both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareLLiteLLMEarly-stageTessl Registry and AI Gateway (LiteLLM Proxy) both list guardrails and safety; scale not recorded for either; ships AI agent, application and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareTTuringLate-stageTessl Registry and Turing Intelligence Platform both list guardrails and safety; Tessl's scale not recorded; ships agent platform and data service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareSSamaUndisclosedTessl Registry and Sama GenAI both list guardrails and safety; scale not recorded for either; ships data service and platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareTTolokaUndisclosedTessl Registry and Toloka Platform both list guardrails and safety; scale not recorded for either; ships AI agent, data service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAssemblyAILate-stageTessl Registry and AssemblyAI Guardrails both list guardrails and safety; ships API service and application rather than the same layer.1 of 2 capabilitiesDifferent layerSame scale bandCompareCCodeRabbitLate-stageTessl Registry and CodeRabbit Security both list guardrails and safety; Tessl's scale not recorded.1 of 2 capabilitiesShared product typeCompareJJFrogPublicTessl Registry and JFrog Agent Guard both list guardrails and safety; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareNNNebula NovaUndisclosedTessl Registry and LibraOS both list guardrails and safety; scale not recorded for either; ships agent platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareDDataikuLate-stageTessl Registry and Dataiku Agent Management both list guardrails and safety; Tessl's scale not recorded; ships AI agent, agent platform and 3 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareZZscalerPublicTessl Registry and Zscaler AI Red Teaming both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeCompareITInvisible TechnologiesLate-stageTessl Registry and Synapse both list guardrails and safety; Tessl's scale not recorded; ships agent platform, data service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareSSplunkAcquiredTessl Registry and Agent and Model Evaluation both list guardrails and safety; Tessl's scale not recorded; Splunk is acquired, with no independent scale.2 of 2 capabilitiesShared product typeCompareIIBMPublicTessl Registry and IBM watsonx.governance both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeCompareEAEnkrypt AIAcquiredTessl Registry and Enkrypt AI both list guardrails and safety; Tessl's scale not recorded; Enkrypt AI is acquired, with no independent scale; ships API service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareMMem0Early-stageTessl Registry and Gateway both list guardrails and safety; scale not recorded for either; ships API service, agent platform and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareLLassoEarly-stageTessl Registry and Lasso AI Security Platform both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerComparePAPalo Alto NetworksPublicTessl Registry and Prisma AIRS AI Red Teaming both list guardrails and safety; Tessl's scale not recorded; ships AI agent, API service and 3 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareMMicrosoftPublicTessl Registry and Foundry Control Plane both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeCompareNNVIDIAPublicTessl Registry and NeMo Helix both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeCompareAAsenionUndisclosedTessl Registry and Asenion AI Control System both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareWWorkdayPublicTessl Registry and Agent Harness both list guardrails and safety; Tessl's scale not recorded.2 of 2 capabilitiesShared product typeCompareLLogosGuardUndisclosedTessl Registry and LogosGuard Enterprise Private LLM both list guardrails and safety; scale not recorded for either; ships application and infrastructure service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareCCraniumEarly-stageTessl Registry and Cranium ONE both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareGAGeordie AIEarly-stageTessl Registry and Beam both list guardrails and safety; scale not recorded for either; ships application rather than the same layer.1 of 2 capabilitiesDifferent layerCompareHSHarmonic SecurityEarly-stageTessl Registry and Harmonic Guide both list guardrails and safety; scale not recorded for either; ships application rather than the same layer.1 of 2 capabilitiesDifferent layerCompareLSLumia SecurityEarly-stageTessl Registry and AI Usage Control both list guardrails and safety; scale not recorded for either; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareKKnosticEarly-stageTessl Registry and Kirin both list guardrails and safety; scale not recorded for either; ships application rather than the same layer.1 of 2 capabilitiesDifferent layerCompareGGlean (Glean Technologies)Late-stageTessl Registry and Glean AI Gateway both list guardrails and safety; Tessl's scale not recorded; ships application and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompare

Closest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.

Sources

Stage, from total funding

Company disclosure · 27 Oct 2026

"Tessl Raises $125M to Build AI Native Development"

Valuation

Not found · 27 Oct 2026

Pages read for this record state no valuation or market capitalisation.

Founded

Regulatory filing · 27 Oct 2026

"Incorporated on 29 February 2024"

Public listing

Not found · 27 Oct 2026

No listing on the pages read; treated as private.

Description

Official documentation · 27 Oct 2026

Company page: "Tessl is the agent enablement platform."

Open Tessl in the directory

Something wrong here? Send a correction — quote this company id: tessl.