I use a lot of software in my work as a developer and manager. The tools that save me the most time are not necessarily the most specialized or expensive. They are the ones that help me organize information, reduce unnecessary communication, and turn decisions into action.

Three tools I rely on for that are Google Calendar, Slack, and Codex.

Used separately, each solves a different problem. Used together, they create a practical system for managing commitments, coordinating a team, and completing work more efficiently.

They will not automatically save every business ten hours a week. However, if your team spends too much time searching for context, sitting in avoidable meetings, or recreating work that has already been discussed, ten hours is a realistic target.

1. Google Calendar
Potential time saved: 1–2 hours per week

Most people use their calendar to track meetings. I also use mine to understand what I have actually committed to and where focused work needs to happen.

That distinction matters. If every open space on a calendar is treated as available, important work gets pushed between meetings or deferred until the end of the day. The result is more context switching, more rushed decisions, and more time spent recovering from an unrealistic schedule.

I use Google Calendar to separate several types of time:

  • Meetings and fixed commitments
  • Preparation needed before those meetings
  • Focused technical or planning work
  • Follow-up time after important discussions
  • Deadlines that require action before the due date
  • Google Calendar supports focus-time blocks, task deadlines, working hours, and appointment schedules. Depending on your Google Workspace plan, focus time can also automatically decline meetings and reduce notifications.

The feature is less important than the habit. When I review my calendar, I am not only asking, “Where do I need to be?” I am asking, “What must be finished, checked, or decided, and when will that work happen?”

A well-maintained calendar reduces scheduling conflicts, forgotten preparation, and the constant mental effort of deciding what to do next. It also makes it easier to see when workload exceeds actual capacity.

2. Slack
Potential time saved: 2–3 hours per week

Slack can save time, but it can also consume an entire day if it is treated as a stream that requires a constant response.

I use Slack primarily for coordination: gathering current priorities, resolving focused questions, identifying blockers, and keeping the appropriate people aware of what is changing.

The biggest advantage is not instant messaging. It is shared context.

A useful Slack message should make it clear:

  • What changed
  • Who owns the next step
  • Whether anything is blocked
  • What decision is needed
  • When someone needs to respond
  • Channels and threads help keep those discussions attached to the right client, project, or topic. Reminders can bring a message back at the appropriate time, and recurring processes can be supported through Slack workflows.

Used well, Slack can replace status meetings, long email chains, and repeated one-to-one explanations. A project manager can post a priority once, the right people can respond in context, and the discussion remains available for later reference.

The risk is allowing Slack to become the only place where decisions and assignments live. Important work should still move into the appropriate project or task-management system. I treat Slack as the coordination layer—not the permanent system of record.

I also do not try to read everything with equal attention. I look first for direct messages, active project discussions, decisions, and items that require action. That keeps Slack useful without allowing it to dictate the entire workday.

3. Codex
Potential time saved: 5–6 hours per week

Codex is the newest tool in this group, and it has changed how I approach both technical and management work.

I use it for more than writing code. I use it to review source material, compare information from different places, prepare planning documents, draft technical guidance, create QA checklists, analyze implementation risks, and turn rough notes into something another person can review.

For example, I can use Codex to help:

  • Review a codebase and identify likely risks
  • Convert project discussions into a proposed action list
  • Prepare a first draft of developer feedback
  • Compare requirements with a proposal or implementation
  • Create a focused QA checklist for a specific change
  • Summarize current priorities from authorized source material
  • Turn a recurring process into a reusable template or workflow
  • Produce a management or client-facing version of technical information
  • OpenAI’s published ChatGPT and Codex use cases include analyzing information, preparing meeting briefs, maintaining documentation, reviewing code, prioritizing Slack action items, and turning recurring inputs into usable reports.

The time savings come from reducing first-pass work. Instead of starting with a blank page- or manually sorting through the same set of sources every week- I can begin with a structured draft and spend my time evaluating it.

That last step is essential.

I do not treat an AI-generated answer as confirmed merely because it is written confidently. I review the sources, preserve uncertainty, check technical claims, and make the decisions that require business or professional judgment. I also keep credentials, private information, and client-sensitive material within approved boundaries.

Codex is most valuable when it supports an accountable person. It can accelerate analysis and production, but it should not silently become the owner of a decision.


The real value comes from connecting the three habits:

  • Google Calendar establishes the commitments and protects the time.
  • Slack provides current team and project context.
  • Codex helps turn that context into a plan, document, checklist, or other reviewable output.


A Monday planning process is a good example.

My calendar tells me which meetings, deadlines, and work periods are fixed. Slack provides current priorities and changes from the people managing the work. Codex helps me organize that information, identify gaps or conflicts, and prepare a practical plan for review.

The final decisions still belong to me and the appropriate project managers. The tools reduce the administrative effort required to reach those decisions.

Across a week, the savings can add up quickly:

One to two hours from better scheduling and fewer interruptions
Two to three hours from more efficient team communication
Five or more hours from faster research, analysis, documentation, and first drafts
That is how these three tools can return roughly ten hours to the week.


Note: I would not recommend adopting software simply because it is popular or includes AI.

Start by identifying where time is currently being lost:

Which information do you repeatedly search for?
Which meetings exist only to exchange status updates?
Which documents do you recreate every week?
Which decisions are delayed because context is scattered?
Which tasks require judgment, and which are simply repetitive?
Once the process is understood, the right tool becomes much easier to choose.

At O2 Digital Creative Agency, we approach websites and digital platforms as working parts of a business- not isolated pieces of technology. A good system should connect people, streamline a real process, and remain understandable to the team responsible for it.

The goal is not to fill your business with more tools. It is to give your people more time for the work that actually needs them.