Team Chat & Instant Messaging (incl. web chat)
Entry signal — what decides who wins here
One thing must be trueEntry turns on a single condition that can be named and tested before much is spent. Clear it and this becomes an execution question; fail it and no amount of operating skill helps.
Displace an incumbent the screen found well defended — payments attached to the workflow, data that does not leave, a contract that renews itself. Share here means giving a buyer a reason to break something that currently works, which is a higher bar than being better.
Measured, not forecast: the share of US establishments opening in one year that were still active later. It counts good operators and bad ones together, which is exactly why it is the honest answer to “what are the odds”. It is for the whole sector rather than this market, and the ten-year figure comes from an older cohort because no younger one has reached ten years.
This is not a probability of success, and it is not a verdict on you. No survival probability is published per market, and inventing one would be worse than saying so. What the bar reads is how much of the outcome sits inside an operator's control: green means the hurdles are ones a better operator clears, red means the binding constraint is capital, an asset or a permission rather than execution. Someone arriving with an advantage this screen did not assume can win a market shown in red.
Companies named in this market · 24
The binding constraint — incumbent vulnerability
Workplace chat is a two-vendor market, and both vendors ship it inside a suite the buyer already pays for. Microsoft Teams reached 320 million monthly active users in October 2023, the last count Microsoft published [B]. Salesforce paid about $27.7B for Slack, closing on 2021-07-21. At the time Slack had $902.6M of revenue for its last fiscal year and 156,000 paid organisations [B]. Google Chat comes with Google Workspace, and Zoom Team Chat comes with Zoom's meetings licence. Zoom's whole business made $4.87B in FY2026, up 4.4% [A]. Even Meta could not get in: it shut Workplace down after claiming 7 million paid users. The product went read-only after August 2025, closed on 2026-05-31, and Meta sent customers to Zoom's Workvivo [B]. Regulation has opened a gap but has not changed the market. On 2025-09-12 the European Commission accepted Microsoft's commitments to sell its suites without Teams, at a lower price, for up to ten years. That ended a case that began with Slack's own complaint [B]. The free and self-hosted tier is full too. Mattermost, Rocket.Chat, Element (Matrix) and Zulip are mature open-source projects that sell sovereignty and air-gapped deployment to governments and defence buyers. Discord serves communities at more than 200 million monthly users [B]. Incumbent vulnerability decides it. Web chat is the older layer, and it has come back as AI agents. The first wave was the live-chat widget of the 2000s: a human agent answering a box on the website. LiveChat (now Text S.A., Wrocław) and LivePerson came from that era. The second wave was the 2016 chatbot boom. Facebook opened Messenger to bots on 2016-04-12, with 900 million monthly Messenger users [C, vendor]. Scripted decision-tree bots mostly could not answer real questions, and the wave faded. The third wave is the one now under way. A language model reads the help centre, resolves the ticket, and is billed per outcome rather than per seat. Intercom's Fin charges $0.99 per resolution [C, vendor]. Text reports a 74% resolution rate for its AI agents (management, not audited) and $89.5M of ARR [A for ARR]. LivePerson, the web-chat pioneer, has been bought by SoundHound AI [C]. This layer is no better for an entrant than team chat. Intercom, Zendesk (taken private for about $10.2B in 2022 [B]), Text, Tidio, Crisp and a free tawk.to already hold it. The 2025 Salesloft Drift breach shows the new risk: stolen OAuth tokens from a chat widget reached the Salesforce, Google Workspace and Slack data of more than 700 organisations [B]. Scope and neighbours. This record covers synchronous messaging: team channels, direct messages, community servers, and the customer-facing chat widget with its AI agent. Knowledge management and enterprise search (Glean, Notion, Confluence) is the answer layer that sits over chat history, not chat itself. AI agent infrastructure and evaluation covers the tooling used to build and test agents, not the chat surface that deploys them. CRM covers the customer record and its service cloud. Support chat is where this record overlaps with CRM, and the chat-widget vendors here are the ones that sell chat first.
Sectors joined: Cybersecurity · SaaS · Technology · Dev Tools · B2B SaaS · AI
[UNVERIFIED] Sector-to-NAICS mapping is analyst judgment — see data/angel-sector-map.json. Counts are a per-record cross-reference and are not additive across records.
The incumbent
Who owns this market and who is coming for it. Fields a screen never reached say so rather than guessing.
Market size, derived
Built from the competitor set upward rather than quoted from a forecast. Published TAMs in these categories are frequently reverse-engineered from each other, so any published figure is checked against the vendor arithmetic rather than trusted on its own.
Disclosed revenue from 2 of 17 named vendors. The market is at least this large.
No vendor has both a disclosed revenue and a published share.
Only a revenue floor is known — the true market is larger by whatever the undisclosed vendors earn.
Competitor set · 17 named · 2 disclose revenue
| Name | Revenue | Share | Note |
|---|---|---|---|
| Microsoft TeamsNASDAQ: MSFTB | not disclosed | — | No Teams revenue line; sold inside Microsoft 365, and since the 2025 EU commitments also as suites without Teams. 320 million monthly active users at FY24 Q1 (2023-10-24), up from 300 million; no later count published [B: office365itpros reporting Microsoft's results] |
| Slack (Salesforce)NYSE: CRMB | $903M | — | Last standalone figure: FY2021 (year ended 2021-01-31) revenue $902.6M, with 156,000 paid organisations, before Salesforce closed its roughly $27.7B purchase on 2021-07-21 [B: The Register]. Salesforce no longer breaks Slack out. Public list price as of 2026-10-10: Pro $7.25 per user a month (annual), Business+ $15, Enterprise+ on quote; the free plan keeps 90 days of history [C, vendor] |
| Google ChatNASDAQ: GOOGLC | not disclosed | — | Bundled in Google Workspace with Gemini; no product revenue or user count published |
| Zoom Team ChatNASDAQ: ZMA | $4.9B | — | Zoom Communications total FY2026 (year ended 2026-01-31) revenue $4,868.8M, up 4.4% [A: 8-K exhibit 99.1]. Team Chat is not broken out and ships free with meetings licences. Zoom also owns Workvivo, which Meta named its only preferred migration partner for Workplace |
| DiscordB | not disclosed | — | Private. Communities and gaming, not workplace chat, but it is the largest group-chat product outside the suites: more than 200 million monthly users (company statement, December 2025). Confidentially filed for a US IPO with Goldman Sachs and JPMorgan, per Bloomberg on 2026-01-06 [B: CGMagazine, Storyboard18]. No public S-1 seen |
| SymphonyB | not disclosed | — | Private. Secure messaging for banks and asset managers. $165M Series E on 2019-06-12 from Standard Chartered and MUFG alongside Goldman Sachs, JPMorgan, Credit Suisse and Morgan Stanley; more than $460M raised in total [B: SC Ventures] |
| MattermostB | not disclosed | — | Private, Palo Alto. Open-core (AGPL-3.0 source, MIT-licensed builds). $50M Series B led by YC Continuity on 2019-06-19, about $70M raised in total [B: VentureBeat]. Now sold as sovereign, air-gapped chat for defence and critical infrastructure; names the US Air Force [C, vendor] |
| Rocket.ChatB | not disclosed | — | Private, Brazilian origin. MIT core with a proprietary enterprise folder. $19M Series A, February 2021, from Valor Capital Group, Greycroft, Monashees, NEA and others [B: MarTech Vibe] |
| ElementB | not disclosed | — | Private, UK. Main developer of the Matrix protocol. $30M Series B led by Protocol Labs with Metaplanet, Automattic and Notion Capital, 2021-07-27; claimed 35M addressable Matrix users and government deployments in the UK, US, France and Germany [B, company release; user count C] |
| Zulip / WireC | not disclosed | — | Zulip: Apache-2.0 threaded chat built by Kandra Labs, no funding disclosed. Wire: end-to-end encrypted messenger (Wire Swiss GmbH) claiming more than 1,800 organisations including government users [C, vendor] |
| Workplace from MetaB | not disclosed | — | Closed. Announced May 2024 and claimed 7 million paid users at the time; read-only from September 2025 and shut on 2026-05-31; customers were directed to Zoom's Workvivo [B: SiliconANGLE]. Shows that even a consumer giant could not dislodge the suite bundles |
| IntercomB | not disclosed | — | Private, Dublin and San Francisco. Web-chat messenger turned AI-first helpdesk. Its Fin AI agent is billed at $0.99 per resolution [C, vendor help centre]. $125M Series D led by Kleiner Perkins at a $1.275B post-money valuation on 2018-03-27, $241M raised in total [B: Index Ventures] |
| ZendeskB | not disclosed | — | Private since 2022-11-22, when a consortium led by Hellman & Friedman and Permira completed the roughly $10.2B take-private at $77.50 a share [B: Permira]. Chat came from its Zopim acquisition; it now sells AI agents on top of ticketing |
| LiveChat (Text S.A.)WSE: TXTA | not disclosed | — | Text S.A., Wrocław, Poland, sells LiveChat, ChatBot.com, HelpDesk and the Text AI agent. Its investor page reports ARR of $89.52M and MRR of $7.29M, and claims more than 40,000 companies in 150 countries [A for ARR; customer count C]. Management cites a 74% AI-agent resolution rate [C] |
| TidioB | not disclosed | — | Private, Polish, founded 2013. Live chat plus the Lyro AI agent for small online stores. $25M Series B led by PeakSpan Capital with Inovo Venture Partners, May 2022 [B: Tech.eu] |
| Drift (Salesloft)B | not disclosed | — | Conversational-marketing chatbot; drift.com now redirects to salesloft.com/platform/drift. Stolen Drift OAuth tokens were used from 2025-08-08 to 08-18 to reach more than 700 organisations' Salesforce, Google Workspace and some Slack data [B: FINRA] |
| LivePersonC | not disclosed | — | Web-chat pioneer, now owned by SoundHound AI. LivePerson's homepage and SoundHound's newsroom both state that the acquisition has completed; the deal value was not read [C, vendor]. Claims more than a billion messages a month [C] |
Startups & challengers
Newer and smaller vendors going at the incumbent — funded challengers first. Named, not researched to the depth of the field above; a company with a page here links to it.
| Company | Stage | What it does | Raised |
|---|---|---|---|
| Botpress | Startup | Survivor of the 2016 bot wave, now an LLM agent builder (MIT), about 14,900 GitHub stars; funding not checked | — |
| Chatwoot | Startup | Open-source Intercom alternative (MIT core plus enterprise folder), about 37,700 GitHub stars; funding not checked | — |
| Chanty | Scrappy competitor | Team communication app for small teams with a free plan; funding not checked | — |
| Crisp | Scrappy competitor | French (Crisp IM SAS) web chat plus AI agent on flat pricing; claims 10,000 companies | — |
| Flock | Scrappy competitor | Team messenger and collaboration app aimed at SMBs; funding not checked | — |
| Pumble | Scrappy competitor | Free-tier team chat from CAKE.com Inc. (maker of Clockify); sold as a cheap Slack alternative | — |
| tawk.to | Scrappy competitor | '100% Free' web-chat widget with paid add-ons and an AI assistant; sets the floor price of the widget at zero | — |
Vendor landscape
Market leaders, the full paid field, and every open-source alternative. Where a free tier exists it is what sets the price floor, so it is analysis rather than an appendix.
320 million monthly active users (October 2023) [B]
FY2021 revenue $902.6M; acquired for about $27.7B in 2021 [B]
More than 200 million monthly users (December 2025) [B]
Paid field · 12 vendors
Bundled in Microsoft 365; sold separately in suites without Teams under the 2025 EU commitments
Salesforce-owned; Pro $7.25 and Business+ $15 per user a month annual; positioned as the home for Agentforce and other AI agents
Included in Google Workspace with Gemini
Included with Zoom licences; Zoom also owns Workvivo
Bank-owned secure messaging and compliance
Swiss end-to-end encrypted messenger, on-premises option
Low-cost Slack alternatives with free plans
AI-first helpdesk; Fin AI agent at $0.99 per resolution
Ticketing plus chat and AI agents; private since 2022
Warsaw-listed; LiveChat, ChatBot.com, HelpDesk and the Text AI agent
Live chat plus AI agent for small online stores
Web-chat pioneer, now part of SoundHound AI
Open source · 5 projects — the price floor
About 39,300 GitHub stars; open-core, sold for sovereign and air-gapped deployments
About 46,200 GitHub stars; team chat plus an omnichannel customer-chat module
Federated, end-to-end encrypted; Element web about 13,600 stars; the Matrix standard is held by the Matrix.org Foundation, a UK Community Interest Company
About 26,000 GitHub stars; topic-threaded chat by Kandra Labs, used by the Rust and Lean communities
About 37,700 GitHub stars; open-source customer web chat and inbox, the self-hosted counterpart to Intercom
Two layers, both crowded. Team chat is held by the suite bundles (Teams, Slack, Google Chat, Zoom Team Chat), with four mature open-source servers under them. Customer web chat is older. It ran from the 2000s live-chat widget to the 2016 scripted chatbot to today's LLM agent billed per resolution, and the same vendors (Intercom, Zendesk, Text, Tidio) carried their installed bases through each wave.
Evidence
Evidence. Market size UNVERIFIED. No vendor reports a team-chat or web-chat revenue line: Microsoft does not break out Teams, Salesforce stopped reporting Slack after 2021, and Zoom does not split out Team Chat. No share figure could be sourced. Opened [A]: Zoom's FY2026 8-K exhibit 99.1 on sec.gov (total revenue $4,868.8M, up 4.4%); Text S.A.'s investor page (ARR $89.52M, MRR $7.29M, Wrocław address; customer count C). Opened [B]: The Register, 2021-07-22, on Salesforce closing the roughly $27.7B Slack purchase, with Slack's FY2021 revenue of $902.6M and 156,000 paid organisations (Salesforce's own release URL returned 404); office365itpros on Microsoft's FY24 Q1 Teams figure of 320 million MAU; News4Jax (AP), 2025-09-12, on the EU accepting Microsoft's Teams commitments for up to ten years; SiliconANGLE, 2024-05-14, on the Workplace shutdown timetable and its 7 million paid users; FINRA's Salesloft Drift alert (8-18 August 2025, more than 700 organisations); CGMagazine and Storyboard18 on Discord's confidential IPO filing and 200M+ monthly users; VentureBeat on Mattermost's $50M Series B; Element's own release on its $30M Series B; MarTech Vibe on Rocket.Chat's $19M Series A; SC Ventures on Symphony's $165M round and $460M+ total; Index Ventures on Intercom's $125M Series D and $241M total; Permira on the Zendesk take-private; Tech.eu on Tidio's $25M Series B. Opened [C, vendor]: Meta's 2016-04-12 Messenger Platform post (bots launched, 900 million monthly Messenger users); Intercom's help-centre page on Fin outcomes ($0.99 per resolution); Slack's pricing page and homepage; LivePerson's homepage and SoundHound's newsroom headline on the completed LivePerson acquisition; the homepages of Mattermost, Zulip, Wire, Crisp, tawk.to, Pumble, Flock and Chanty. GitHub's API and LICENSE files were read on 2026-10-10 for open-source licences, stars and recent pushes. Not verified, so not used as findings: Discord's 2021 valuation of about $15B and its secondary-market marks; Text S.A.'s annual PLN revenue (only an aggregator figure was seen); any Fin ARR figure; Slack's earlier list prices; the LivePerson deal value. The Teams figure is three years old because Microsoft has stopped publishing it. Verify before acting.
Where the industry talks
The associations, forums and events where people in this trade actually talk shop — where to listen before entering, and where the first customers are found. Each link was opened on the date shown.
Slack-hosted community for customer-support professionals, the people who run web chat and AI agents; 'Join 30,000+' on its home page. New York Summit 27-29 Oct 2026.
Annual conference of the Matrix open-messaging ecosystem (Element and others); 20-23 Oct 2026 in Malmo, Sweden, with a hackathon in Copenhagen.
Non-profit UK Community Interest Company that acts as the neutral custodian of the Matrix standard; no member count on the page opened.
Vendor-neutral enterprise communications and collaboration conference (Informa TechTarget); 2026 edition in Las Vegas, 10-12 March; a 2027 floor plan is posted.
Contact-centre training and events body (Informa TechTarget) that runs Contact Center Expo; no membership count on the page opened.
Team chat has no buyer association of its own: IT buys it as part of the productivity suite. The communities that do exist are the open-source Matrix ecosystem and the customer-support and contact-centre professions that run web chat. No Jitter, the main trade publication, said it would stop publishing on 2026-09-30 and is left out.