Chatwork vs Slack

Chatwork

• Teams that chat with clients and partners outside their own company
• Small groups starting at no cost: the Free plan covers up to 100 users
• Teams that want task assignment inside the conversation

Slack

• Teams that want conversations organized by channel rather than email threads
• Companies that work with outside partners in shared channels
• Organizations that already run on Salesforce
• Teams that connect many third-party apps to their chat

Chatwork

• Free plan members can only view messages from the last 40 days, and its 10GB of storage is shared by the whole organization.
• Group video calls need the Standard plan; the Free plan is limited to 1:1 video calls.
• No Linux desktop app is listed: the download page covers Windows, macOS, iOS, Android and web browsers.
• The English pricing page lists only Free and Standard; the Japanese page adds a Professional plan with security controls, priced in yen.

Slack

• The Free plan keeps only 90 days of message history searchable, allows 10 apps, and limits huddles and Slack Connect to 1:1.
• SAML single sign-on and SCIM start at Business+; ongoing Slackbot access is on Business+ and Enterprise+, with a limited trial on Free and Pro.
• Enterprise search, multiple SAML configurations and native data loss prevention are limited to Enterprise+, which is priced by sales.
• In a browser, huddles are supported only in Chrome and Firefox.

Chatwork

Group, direct and personal chats

A group chat is set up for each team or project, direct chats reach anyone in your contact list, and My Chat is a private space for your own notes and files.

Tasks inside chats

Assign tasks to yourself or to colleagues from the chat screen and review them by due date. The person who assigned a task is notified when it is completed.

File sharing and management

Upload Word, Excel and image files to a chat, preview them in the browser, and see every file shared in a group in one list.

Voice and video calls

Start a call with screen sharing from a chat, on desktop or phone. The Free plan covers 1:1 video calls; group video calls need Standard.

Contacts outside your organization

Add people at other companies by email address or Chatwork ID. The Free plan allows 20 outside contacts per user; Standard removes the limit.

Admin and security controls

Admins add, remove and edit users from a management screen. Two-factor authentication is on both plans, and uploaded files are encrypted with AES-256.

Slack

Channels and direct messages

Conversations are organized into channels for each project, topic or team, alongside direct messages. Paid plans keep the full message and file history searchable; Free keeps 90 days.

Huddles and clips

Huddles are audio and video meetings with screen sharing, 1:1 on Free and for groups on paid plans. Clips are recorded audio or screen updates shared in a conversation.

Slack Connect

Message people outside the company. Free allows 1:1 external direct messages; paid plans add group chats and shared channels with up to 250 organizations.

Canvases and lists

A canvas holds text, files, images and video inside Slack, and lists are used to manage projects and organize tasks with teammates.

Workflow Builder and apps

Workflow Builder automates routine processes without code, and the app directory lists more than 2,600 apps. A Free workspace can connect up to 10 of them.

AI in Slack

Pro includes AI conversation summaries. Business+ adds AI search, daily recaps, file summaries, workflow generation and the Slackbot personal agent, subject to plan limits.

Chatwork

• Free$0

  Up to 100 users, unlimited group chats, the last 40 days of messages, 10GB of storage per organization and 1:1 video calls.

• Standard$7

  per user / month, annual subscription ($8.40 billed monthly)

  Unlimited users, outside contacts and message history, group video calls, 10GB of storage per user, bulk user import from CSV and dedicated support.

Slack

• Free$0

  90 days of message history, up to 10 app integrations, and 1:1 huddles and external messages.

• Pro$7.25

  per user / month, billed annually ($8.75 billed monthly)

  Unlimited message history and app integrations, group huddles, Slack Connect channels with up to 250 organizations, and AI conversation summaries.

• Business+$15

  per user / month, billed annually ($18 billed monthly)

  Adds AI search, daily recaps, file summaries and workflow generation, the Slackbot agent, SAML single sign-on and SCIM user management.

• Enterprise+Custom

  Adds enterprise search across connected apps, multiple SAML configurations, EMM support, native data loss prevention and unlimited workspaces.

Chatwork

• Annual discount

  About 17% less on an annual subscription

  Standard costs $7 per user / month on an annual subscription against $8.40 on a monthly one, a saving of about 17%.

Slack

• Annual discount

  About 17% less with annual billing

  Pro is $7.25 per user / month paid annually against $8.75 paid monthly, and Business+ is $15 against $18. Salesforce's Slack pricing page puts the saving at approximately 16%.

• Other savings

  50% off the first 3 months for new teams

  A limited-time offer for teams that buy Pro or Business+ online within 7 days of creating the workspace. It applies to monthly billing only, and standard pricing follows after 3 months.

• Nonprofit

  Free or 85% off for eligible nonprofits

  Eligible nonprofits get a free Pro upgrade for workspaces with 250 or fewer members and 85% off above that size. Business+ is 85% off at any size.

• Education

  85% off for educational institutions

  The Slack for Education program gives approved institutions an 85% discount on the Pro or Business+ plan, applied at checkout.