Plain is a Customer support tool: Support tool built for B2B and technical teams.

How much does Plain cost?

Plain uses a Freemium model; paid plans start at $45 per month.

What are the best alternatives to Plain?

Community-listed alternatives to Plain include Tori, Chatwoot, Gleap, Knocket.

Does Plain have a free trial?

Yes, Plain offers a 14-day free trial.

What does Plain integrate with?

Plain integrates with Slack, Microsoft Teams, Linear, Jira, HubSpot, Salesforce and more.

Plain

Support tool built for B2B and technical teams

Freemium · $45Customer support

Visit website

Plain is a customer support tool for Developers and Small businesses, offered as freemium ($45/mo). Based in United Kingdom, founded in 2020. Popular alternatives include Tori, Chatwoot, Gleap.

About Plain

Plain is a customer support platform built for B2B and technical companies, based in London. Instead of assuming customers will submit tickets through a form, it is designed around the channels B2B customers actually use: shared Slack Connect channels, Microsoft Teams, Discord, email, in-app chat and forms, all flowing into one fast, keyboard-driven inbox.

Plain's API-first design lets companies enrich every thread with customer data such as plan, account owner or usage, so routing and prioritization can use tiers, SLAs and customer importance. Threads can be linked to Linear and Jira issues so engineering and support stay in sync, and status updates flow back to customers. AI features triage incoming messages, summarize long Slack threads, suggest replies and power an AI agent that answers routine questions from documentation. Pricing is per seat: Foundation covers small teams with Slack, email, in-app chat and the AI agent; Horizon adds Microsoft Teams, SLAs, a help center and CRM integrations; and custom-priced Frontier adds SSO, SCIM and advanced security.

Plain suits developer-tool, infrastructure and B2B SaaS companies whose customers expect support in shared Slack channels and whose support engineers want a modern tool. It is less suited to high-volume consumer support and has fewer integrations than Zendesk or Intercom. Pylon is its closest competitor for Slack-based B2B support, Thena covers similar ground, and Front works well for email-heavy B2B teams.

Key features of Plain

Unified inbox for Slack, Teams, email, Discord, chat
Customer context via API
Tiers, SLAs and routing
AI triage and drafting
Linear and Jira integration
API-first architecture

Pros and cons

Pros

Built for B2B support in Slack
Developer-friendly API
Modern, fast UI
Engineering issue linking

Cons

Per-seat pricing
Less suited for B2C volume
Younger product
Fewer integrations than Zendesk

Plain pricing

Plain uses a freemium model. A 14-day free trial is available.

Plan	Price	Includes
Foundation	$45 / user/mo	Billed annually; up to 5 seats, 1,000 AI credits/mo
Horizon	$99 / user/mo	Billed annually; 3-10 seats, 2,500 AI credits, SLAs, Teams
Frontier	Custom	Multiple workspaces, SSO/SCIM, HIPAA

Source: www.plain.com · checked on Oct 20, 2026

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How Plain compares in Customer support

Rank by votes: #1 / 31
Starting price: $45
Free alternatives: 3

Plain ranks #1 of 31 customer support tools by community votes and is priced above most tools in the category.

Common use cases

1Developer tool supporting customers in Slack Connect
2B2B SaaS with SLA tiers
3Escalating bugs to Linear
4Consolidating Discord and email support

Best for

B2B and developer-focused SaaS.

Not ideal for

High-volume consumer support (Zendesk, Gorgias).

Integrations

Slack
Microsoft Teams
Linear
Jira
HubSpot
Salesforce
Discord
GraphQL API

Our take

Plain is the modern support tool for B2B companies living in Slack.

FAQ

What is Plain?: Plain is a Customer support tool: Support tool built for B2B and technical teams.
How much does Plain cost?: Plain uses a Freemium model; paid plans start at $45 per month.
What are the best alternatives to Plain?: Community-listed alternatives to Plain include Tori, Chatwoot, Gleap, Knocket.
Does Plain have a free trial?: Yes, Plain offers a 14-day free trial.
What does Plain integrate with?: Plain integrates with Slack, Microsoft Teams, Linear, Jira, HubSpot, Salesforce and more.
Which platforms does Plain support?: Plain is available on web.
Who is Plain for?: B2B and developer-focused SaaS.

Alternatives to Plain

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Tori
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AI support agent from TalkJS that cites sources and hands off cleanly
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checked Oct 24
Chatwoot
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Open-source customer engagement suite
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checked Oct 20
Gleap
▲ 0
AI customer support with bug reports, session replay and code fixes
Paid · $35Small businesses
checked Oct 22
Knocket
▲ 0
Free live chat widget, contact page and unified inbox for small teams
FreeFreelancers
checked Oct 31
reception
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Native in-app support chat for iOS apps, with offers and reviews
Paid · $25Developers
checked Oct 22
Crisp
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Affordable all-in-one messaging and helpdesk
Freemium · $45Small businesses
checked Oct 20

More Customer support tools

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Front
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checked Oct 20
Higher Logic Vanilla
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Customer community and support forum software for B2B and B2C brands
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checked Oct 20
Chatbase
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checked Oct 20
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