We need an on-call scheduling and alerting tool that's less complex than PagerDuty but still integrates with Slack.

If your goal is on-call scheduling + alerting with Slack integration, but you want something simpler than PagerDuty, these are the strongest options:

1. Squadcast (my top recommendation)

If you mostly need:

• On-call rotations
• Escalation policies
• Alert routing
• Slack notifications
• Mobile push/SMS/calls

Squadcast covers the essentials without the configuration overhead that PagerDuty is known for. It's generally positioned as a lower-cost alternative while still providing the core operational features engineering teams expect.FuturePicker+1

Best for:

• 5–100 engineers
• Startups
• DevOps/SRE teams that don't need enterprise-scale workflow automation

2. Better Stack

Better Stack combines:

• uptime monitoring
• incident alerting
• on-call schedules
• status pages

into one product, which can reduce the number of tools you manage. If you're currently paying separately for monitoring and paging, this can simplify your stack. Its on-call capabilities are designed for straightforward routing and Slack integration rather than highly complex escalation logic.DevHelm+1

Best for:

• SaaS teams
• Infrastructure monitoring
• Simpler operational workflows

3. incident.io

incident.io takes a Slack-first approach:

• Create incidents from Slack
• Manage responders in Slack
• Maintain timelines
• Add on-call scheduling

It emphasizes collaboration during incidents more than advanced alert orchestration.Incidentary+1

Best for:

• Teams that spend most of their operational time in Slack
• Organizations wanting modern incident management alongside on-call

4. Rootly

Rootly is similar to incident.io but offers more workflow automation:

• Native on-call scheduling
• Slack-driven incident response
• Automated runbooks
• Postmortems

It's powerful, but if you're specifically trying to avoid complexity, it may be more than you need unless you also want automated incident workflows.Rootly+1

5. Grafana IRM (OnCall)

A good choice if you're already invested in the Grafana ecosystem. It provides scheduling and alerting that integrate naturally with Grafana Cloud and related monitoring tools, though the user experience is more dashboard-oriented than Slack-native offerings.Alternative.to+1

My recommendation based on team size

• 5–20 engineers: Squadcast or Better Stack
• 20–100 engineers: Squadcast or incident.io
• Slack-centric engineering culture: incident.io or Rootly
• Already using Grafana: Grafana IRM

If you can share:

• your team size,
• what monitoring system you use (Datadog, Prometheus, New Relic, CloudWatch, etc.), and
• whether you need phone/SMS paging or Slack notifications alone,

I can narrow it down to one or two options that fit your setup.

If PagerDuty feels like driving an 18-wheeler to pick up groceries, you need a tool that handles schedules and alerts cleanly without the enterprise bureaucracy, complex escalation matrices, and heavy setup.

The best alternatives that keep things lightweight while maintaining a tight, native connection to Slack include:

• Better Stack
  • What it is: An all-in-one platform combining beautiful uptime monitoring, log management, and straightforward on-call scheduling.
  • Why it’s simpler: It cuts out the massive configuration overhead of legacy tools. Setting up rotations, overrides, and multi-step escalations takes minutes rather than days.
  • Slack Integration: Offers robust incident alerts and a clean interface directly inside your channels, making it ideal if you want your logs, monitoring, and alerts in a single coherent view. Check it out on the Better Stack Slack Marketplace Listing.slack.com+2
• Pagerly
  • What it is: A lightweight, Slack-first app built specifically to manage lightweight rotations, on-call schedules, and ad-hoc task routing without leaving your workspace.
  • Why it’s simpler: It natively syncs your on-call calendar with Slack User Groups (automatically rotating who is behind handles like @sre-on-call ). You can build round-robin or custom schedules directly via commands, avoiding heavy external UIs for trivial or mid-sized team needs.
  • Slack Integration: Deeply embedded. It updates user groups, notifies handovers, and lets you manage everything inline. Explore it on the Pagerly Slack Marketplace Listing.slack.com+2
• Zenduty
  • What it is: An incident management and modern on-call platform designed to be developer-friendly and much easier on the eyes/mind than PagerDuty.
  • Why it’s simpler: It provides clean, intuitive scheduling, intelligent alert routing, and post-mortems without forcing you through rigid enterprise templates.
  • Slack Integration: Features bi-directional Slack integration allowing you to acknowledge, resolve, and trigger incidents straight from chat threads.
• OnCallManager
  • What it is: A micro-tool built precisely for keeping on-call ownership transparent inside Slack.
  • Why it’s simpler: It's ultra-focused on rotating shift responsibilities, managing quick overrides for sick leave/vacations, and syncing with Google Calendar.
  • Slack Integration: Automatically manages mentionable user groups and alerts designated channels during handoffs. View details on the OnCallManager Slack Marketplace Listing.slack.com

To help narrow down the best fit, tell me:

• Do you need native uptime/infrastructure monitoring built into the tool (like Better Stack), or do you just need a pure scheduler/pager that hooks into existing alerts?
• Roughly how many engineers are on your team?

If you want something simpler than PagerDuty with Slack integration, I’d look at tools that prioritize lightweight rotations, straightforward escalation, and Slack-first workflows rather than full enterprise incident management. Here are the strongest options:

A few practical recommendations:

If you only need rotations + alerts

Try:

• Pagerly — designed around Slack-native on-call management and simpler workflows.www.pagerly.io
• Opsgenie — more traditional, but familiar if you expect PagerDuty-like escalation policies.oncallmanager.app+1

If you want incidents handled inside Slack

Try:

• incident.io — strong for creating incident channels, coordinating responders, and managing incident workflows from Slack.incident.io
• Rootly — similar Slack-first approach with more process automation.inventivehq.com

If you already use monitoring tools

• Grafana’s on-call tooling can make sense if your alerts already flow through the Grafana ecosystem.oncallmanager.app

For a small engineering team (roughly 5–30 people) that lives in Slack, I’d start by evaluating Pagerly, incident.io, and Opsgenie. For a team that mainly needs “who is on call, rotate weekly, notify them in Slack, escalate if missed,” avoid the heavier incident-management platforms and choose the simplest scheduler that supports your alert sources.oncallmanager.app+1

If you tell me your setup (team size, monitoring source like Datadog/Prometheus/AWS, and whether you need SMS/phone paging), I can narrow this to 2–3 choices.

If your main requirements are on-call schedules + reliable alerting + Slack, and you specifically want something simpler than PagerDuty, I’d shortlist these:

My recommendation: incident.io

incident.io is probably the closest match to what you're describing. It's designed around Slack rather than treating Slack as merely a notification destination. You can handle incidents, escalation, responders, and on-call workflows from Slack.Incident+1

The tradeoff is that its on-call pricing is an add-on, so it's worth checking the actual cost for your responder count rather than comparing only the headline price.Incident

If you want really simple

Better Stack is worth a serious look if you also need uptime monitoring. It combines monitoring, alerting, and on-call rather than making you assemble several products. Its on-call functionality is less sophisticated than PagerDuty, which in your case may actually be a benefit.Incident

If you want "PagerDuty, but less annoying"

Squadcast is probably the safest choice. It retains the familiar concepts—rotations, escalation policies, alert routing—but targets smaller teams and a lower-complexity experience. Recent comparisons position it particularly well for budget-conscious teams of roughly 10–100 people.FuturePicker+1

One I'd avoid starting with

Rootly is excellent if you want sophisticated incident automation, but that's arguably moving in the opposite direction from your goal. Its strength is highly customizable workflows, which also means more configuration.FuturePicker

If I were choosing for a 10–50 person engineering team:

1. incident.io — if Slack is where your team already works.
2. Better Stack — if you want monitoring + alerting + on-call in one simple product.
3. Squadcast — if you primarily want a straightforward PagerDuty replacement.

If you tell me roughly how many people are on-call and whether you're using Datadog, Grafana, AWS, or something else for monitoring, I can narrow it down to one or two options.

incident.io is probably the closest match to what you're describing. It's designed around Slack rather than treating Slack as merely a notification destination. You can handle incidents, escalation, responders, and on-call workflows from Slack.Incident+1

The tradeoff is that its on-call pricing is an add-on, so it's worth checking the actual cost for your responder count rather than comparing only the headline price.Incident

If you want really simple

Better Stack is worth a serious look if you also need uptime monitoring. It combines monitoring, alerting, and on-call rather than making you assemble several products. Its on-call functionality is less sophisticated than PagerDuty, which in your case may actually be a benefit.Incident

If you want "PagerDuty, but less annoying"

Squadcast is probably the safest choice. It retains the familiar concepts—rotations, escalation policies, alert routing—but targets smaller teams and a lower-complexity experience. Recent comparisons position it particularly well for budget-conscious teams of roughly 10–100 people.futurepicker.com+1

One I'd avoid starting with

Rootly is excellent if you want sophisticated incident automation, but that's arguably moving in the opposite direction from your goal. Its strength is highly customizable workflows, which also means more configuration.

If I were choosing for a 10–50 person engineering team:

If your main goal is “PagerDuty-like paging/on-call, but simpler, with good Slack integration,” I’d shortlist these:

1. incident.io — my first choice

incident.io is probably the closest match to what you're describing. Its on-call schedules, escalation paths, alert routing, and incident response can all operate through Slack, rather than merely sending PagerDuty notifications into Slack.Incident+1

The nice mental model is:

Monitoring alert → incident.io → page current on-call → Slack incident channel → escalation if nobody responds.

It also has PagerDuty migration tooling, so you don't necessarily have to rebuild everything manually.Incident

incident.io

2. Better Stack — if you want it really simple

Better Stack is worth looking at if your needs are basically on-call + alerting + uptime monitoring/status pages, rather than sophisticated incident workflows. Current comparisons generally position it as a good fit for small teams that want these capabilities bundled together.Runframe+1

betterstack.com

3. Rootly — if Slack workflows matter more

Rootly is very Slack-centric and offers on-call schedules, escalation policies, workflows, and incident coordination. The downside for your particular requirement is that its strength is deep customization, which can introduce the very configuration complexity you're trying to get away from.Rootly+1

rootly.com

4. Grafana Cloud IRM — if you're already a Grafana shop

Grafana Labs's incident response/on-call tooling makes sense if your alerts already originate in Grafana/Prometheus/Loki. It handles schedules, alert routing and Slack notifications, but it's more of an on-call/alerting component of the Grafana ecosystem than a full Slack-native incident-management experience.Incident

grafana.com

What I'd pick

For a typical 5–50 person engineering team, I'd evaluate them in this order:

1. incident.io — best balance of simple on-call + excellent Slack experience.
2. Better Stack — choose this if you want the fewest features/configuration knobs.
3. Rootly — choose this if you expect to build sophisticated incident workflows later.
4. Grafana Cloud IRM — choose this if Grafana is already central to your monitoring stack.

One important distinction: if by “alerting” you mean reliable phone/SMS/push paging and escalation, rather than just Slack alerts, I'd specifically test the notification/escalation behavior during a trial. That's the part where PagerDuty's maturity is hardest to replace.

If you tell me team size + monitoring stack (Datadog/Grafana/New Relic/etc.) + whether you need SMS/phone paging, I can narrow this to the best 1–2 options and compare pricing.

Monitoring alert → incident.io → page current on-call → Slack incident channel → escalation if nobody responds.

It also has PagerDuty migration tooling, so you don't necessarily have to rebuild everything manually.Incident

incident.io

2. Better Stack — if you want it really simple

Better Stack is worth looking at if your needs are basically on-call + alerting + uptime monitoring/status pages, rather than sophisticated incident workflows. Current comparisons generally position it as a good fit for small teams that want these capabilities bundled together.Runframe+1

betterstack.com

3. Rootly — if Slack workflows matter more

Rootly is very Slack-centric and offers on-call schedules, escalation policies, workflows, and incident coordination. The downside for your particular requirement is that its strength is deep customization, which can introduce the very configuration complexity you're trying to get away from.rootly.com+1

rootly.com

4. Grafana Cloud IRM — if you're already a Grafana shop

Grafana Labs's incident response/on-call tooling makes sense if your alerts already originate in Grafana/Prometheus/Loki. It handles schedules, alert routing and Slack notifications, but it's more of an on-call/alerting component of the Grafana ecosystem than a full Slack-native incident-management experience.